Can I Use DPG Alone as a Reed Diffuser Base, or Will Its Viscosity Affect How Quickly the Liquid Travels Through the Reeds?

Can I Use DPG Alone as a Reed Diffuser Base, or Will Its Viscosity Affect How Quickly the Liquid Travels Through the Reeds?

 

Pure Performance Base ₹325.00 / 100 g Black fibre reeds ₹236.00 / 25 Gold 50 ml bottles ₹826.00 / 10
CSI reed diffuser guide · Which reed diffuser base should I buy?
Find out whether DPG's thickness is really slowing your reeds — or whether reed count, load or room is the limit — before you change carrier.
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Eco Candle Wicks
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Eco Candle Wicks
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Bamboo Wick Holder
Reviews collected and published through Judge.me on candlemakingsuppliesindia.store. They are general reviews of the wicks and wick tools named on each card, not assessments of the viscosity test set out below. Wording is unedited.
See Pure Performance Base Plan my DPG test on WhatsApp
✓ Base prices pulled 14 October 2026 ✓ CSI does not sell DPG ✓ IFRA certificates for oils on request
DPG Alone × Viscosity × Reeds
DPG alone is a common diffuser carrier. Its thickness can slow travel up the reed and its slow evaporation can quieten the room — but so can too few reeds, a low load or a big room. Three measurements tell you which one is yours.
₹2,112.00
CSI bottles, reeds and Pure Performance 100 g for an uptake test and a three-arm bottle round, using your own DPG and oil · CSI live pricing, pulled 14 October 2026
Quick answers — read this first
Can I use DPG alone? Yes — it is commonly used on its own with fragrance oil. Whether it suits your oil, load and reeds is a test question.

Does viscosity slow the reeds? A thicker liquid is commonly described as climbing a reed more slowly — but once reeds are loaded, evaporation from the reed is often the brake. Measure both.

How do I measure travel? Weigh bundles of 3 reeds dry, then after 1 h, 3 h and 24 h in the liquid. See the uptake test.

What should I try first? More reeds. Arm C keeps DPG and goes from 6 to 8 reeds; if that fixes the room, keep the DPG.
The short answer
Answer: Yes. DPG is commonly used alone as a reed diffuser carrier. Its viscosity may slow how fast the reeds load, and its relatively slow evaporation may limit release, but the oil you add changes both — so test the scented blend, not DPG alone.
Why: A diffuser has two steps — capillary travel up the reed and evaporation from the exposed reed. A slow first step matters only if it cannot keep up with the second.
Method: Reed-bundle uptake at 1 h, 3 h and 24 h in plain DPG, scented DPG and scented Pure Performance; then 3 bottles per arm at 25% — DPG, Pure Performance, DPG with 8 reeds — weighed day 3 to 21 and scored blind.
Shop: Pure Performance Base · Eucalyptus Spearmint · Fiber Diffuser Reeds (Black) · Gold Reed Diffuser Bottle 50 ml · help on WhatsApp.
In this guide
Two places a carrier can limit a reed diffuser Travel up the reed, and evaporation from the exposed reed · three measurements separate them Bottle with reeds 1 · Travel up the reed Capillary flow; a thicker liquid is commonly described as travelling more slowly 2 · Evaporation from the exposed reed Carrier and fragrance leave the reed surface; a slow-evaporating carrier releases less per hour A · Reed-bundle uptake Weigh 3 reeds dry, then at 1 h, 3 h, 24 h Measures travel B · Bottle grams per day Weigh bottle + reeds, day 3 to day 21 Measures what leaves C · Blind room score Fixed room, fixed time, house scale Measures what you smell What you measure Slow uptake + low g/day + weak score = the carrier is limiting. Fast uptake + low g/day = evaporation is the brake. Good uptake and g/day but a weak score = look at the oil, load or room, not viscosity.
A carrier can limit a reed diffuser in two places: travel up the reed by capillary action, and evaporation from the exposed reed. Reed-bundle uptake measures the first, bottle grams per day measure what actually leaves, and a blind room score measures what you smell; together they show whether DPG's viscosity is really the limit.
Comparison arm
Pure Performance Base · ₹325.00 / 100 g
The base pillar
Which reed diffuser base should I buy in India?
Before you switch
Plan the test on WhatsApp
Straight answer
Can I use DPG alone as a reed diffuser base, or will its viscosity affect how quickly the liquid travels through the reeds?
Yes, you can use DPG alone — it is commonly used that way — and its viscosity may slow how quickly the reeds load, but that is only a problem if the slow climb cannot keep up with evaporation from the reed, which you can measure. DPG is commonly described as a low-odour, relatively slow-evaporating glycol carrier and as thicker than many lighter solvents; CSI does not sell it and this page gives no viscosity figures. Two things limit a diffuser: travel up the reed and release from it. Your fragrance oil changes both — at 25% the blend often flows differently from DPG alone. So measure three things: weigh bundles of 3 reeds after 1, 3 and 24 hours in plain DPG, scented DPG and scented Pure Performance; weigh bottles with reeds from day 3 to day 21 for grams per day; and score the room blind. Include a DPG arm with 8 reeds instead of 6. If more reeds fix the room, keep the DPG. The round costs ₹2,112.00 in CSI bottles, reeds and base.
One line: measure reed uptake, grams per day and the room before you blame DPG's thickness — more reeds often fix it.
You can test whether DPG's thickness is slowing your reeds for very little: two 100 g packs of Pure Performance Base (₹650.00) give you a ready-made comparison arm and an uptake glass, and the whole round — bottles, reeds and base — costs ₹2,112.00 with your own DPG and oil.
See Pure Performance Base

Yes, you can — and you can measure whether its viscosity is the problem

DPG on its own is a common diffuser carrier. Whether it is too thick for your reeds is not a matter of opinion — it is three weighings.

DPG — dipropylene glycol — is commonly described as a low-odour, relatively slow-evaporating glycol carrier, and as noticeably more viscous than many lighter perfumery solvents. Many makers use it alone with fragrance oil and fibre or rattan reeds. CSI does not sell DPG, and this page does not give viscosity or evaporation figures for it, because they vary by grade and supplier and because a viscosity number would not tell you what you actually need to know: how your oil, in the DPG you use, at your load, behaves on your reeds in your room.

Your instinct about viscosity is reasonable. A reed diffuser works in two steps. The liquid travels up the reed by capillary action, and then the carrier and fragrance evaporate from the part of the reed sticking out of the bottle. A thicker liquid is commonly described as travelling up a capillary more slowly, and a slow-evaporating carrier releases less per hour from the reed surface. Either can make a diffuser quiet. But they are different problems with different fixes, and the fragrance oil you add changes the blend's flow too — often making it thinner than DPG on its own. So the honest answer is: use DPG alone if your test shows the reeds load fully and the room is strong enough; change the carrier only if the test points at the carrier rather than the reeds, the load or the room.

This page gives you the test. It uses Eucalyptus Spearmint at 25% by weight in the 50 ml Gold Reed Diffuser Bottle 50 ml, the DPG you already hold, and Pure Performance Base — the neutral ready-made base, the only CSI base sold in a 100 g size — as the comparison. It adds a third arm that changes reed count instead of carrier, because if more reed surface fixes a quiet DPG diffuser, you never needed a new carrier at all.

The three measurements · what each tells you about the viscosity question
Is it travel, evaporation, or something else?
You see… Reed uptake (travel) Bottle g/day (what leaves) Room score Most likely limit
Pattern 1 Slow Low Weak The carrier — viscosity and evaporation together
Pattern 2 Fast Low Weak Evaporation from the reed, not travel — the carrier's volatility or a still, cool room
Pattern 3 Fast Normal for your target Weak Not the carrier: the oil, the load or the room size
Pattern 4 Slow Normal Good Nothing to fix — slow loading, good steady state
Pattern 5 Any Higher with 8 reeds Better with 8 reeds Reed surface, not carrier — add reeds before changing DPG

This page owns the viscosity question for DPG. If you are still choosing between CSI's ready-made bases, the base-selection pillar shortlists them by fragrance family, and the solvent-route pillar compares DPG with Augeo-type and alcohol-based formulas.

The CSI principle
Measure travel, evaporation and the room separately before you blame viscosity. Only one of the three fixes needs a new carrier.
Slow uptake, a low g/day and a weak score together point at the carrier. Any other pattern points at reeds, load, oil or room — all cheaper to change.

How a carrier's thickness and volatility show up in a diffuser

Picture the reed as a bundle of very fine channels. When it first goes into the liquid, the liquid climbs those channels until the reed is wet along its length. How quickly that happens depends on the liquid — thicker liquids are commonly described as climbing more slowly — and on the reed: fibre reeds and rattan reeds have different internal structures, and even reeds of one type vary. CSI's fibre reeds are 20.3 cm long; their diameter is not published, so this page never assumes it.

Once the reed is saturated, the system settles into a steady state. Liquid evaporates from the exposed reed and more climbs up to replace it. At that point, the speed of climbing matters only if it is slower than the speed of evaporation; if evaporation is the slower step, the reed stays wet and the limiting factor is how readily the carrier and fragrance leave the surface. That is why a viscous carrier does not automatically mean a weak diffuser — a slow climb can still keep up with slow evaporation — and why a fast-climbing carrier can still give a quiet room if it is reluctant to evaporate.

The fragrance oil complicates both steps. At 25%, a quarter of the blend by weight is oil, and many fragrance oils are commonly described as thinner and more volatile than DPG. So the blend you put in the bottle can travel and evaporate quite differently from DPG on its own. That is why the test below measures the scented DPG blend, not just DPG, and why it includes plain DPG only in the uptake glass, as a reference for how much the oil changes things.

A free clue before you buy anything
Watch what happens when you flip the reeds. If a flipped reed gives a strong burst that fades within an hour or two, the freshly wet end is releasing more than the steady state supplies — a hint that travel or evaporation at the tips is limiting. If flipping makes little difference, the reeds are already loaded and evaporation is the brake. Good throw only when you flip the reeds covers this pattern in depth.
The common mistake: switching carrier because DPG "looks thick". A maker pours DPG, sees it move slowly, decides it is too viscous, and buys a lighter carrier — which runs out in half the time and smells no stronger, because the real limit was an eight-square-metre room with the AC on. Fix: run the three measurements. If the uptake test shows the reeds load within a day and the room is still weak, viscosity was never the problem.

Test A: the reed-bundle uptake test

This is the direct measurement of travel. Use three liquids in three narrow glasses of your own — tall enough that a reed stands with most of its length out: plain DPG, DPG with 25% oil, and Pure Performance with 25% oil. Put 40 g of liquid in each. Weighing a single reed is often beyond a kitchen-style scale, and CSI does not publish the Weighing Scale's resolution, so weigh bundles of 3 reeds instead: three reeds from the same pack, held together with a small rubber band above the liquid line.

1
Weigh each dry bundleMake three bundles of 3 black fibre reeds from one pack. Weigh each dry bundle and write it down. Check your scale's display steps; if it reads in whole grams, record that and interpret small differences cautiously.
2
Stand each bundle in its liquidSame depth in every glass — mark the liquid level on the glass. Note the time. Keep the three glasses side by side, away from fans and sunlight.
3
Watch and mark the wet lineFibre reeds often darken as liquid climbs. At 15 minutes, 1 hour and 3 hours, mark the visible wet line on a strip of masking tape beside each glass. Black reeds may hide the line; that is why you also weigh.
4
Weigh at 1 h, 3 h and 24 hLift each bundle, let it drip over its glass for a fixed 30 seconds, wipe the dipped end once on a tissue, weigh, and return it. The gain over the dry weight is liquid taken up. Do it the same way every time.
5
Smell the tipsAt 3 h and 24 h, smell the top 2 cm of each scented bundle. When the oil reaches the tips, the reed is carrying fragrance its whole length.
Example record · bundles of 3 reeds · 40 g of liquid per glass
Uptake record sheet
Liquid Dry bundle g Gain 1 h Gain 3 h Gain 24 h Wet line 15 min / 1 h / 3 h Tips smell of oil at
Plain DPG (reference) ___ ___ ___ ___ ___ / ___ / ___ —
DPG + 25% oil ___ ___ ___ ___ ___ / ___ / ___ ___ h
Pure Performance + 25% oil ___ ___ ___ ___ ___ / ___ / ___ ___ h

How to read it. If the scented DPG bundle has gained about as much by 24 hours as the scented Pure Performance bundle, and its tips smell of the oil, travel is not your limit — the reeds are loading. If the DPG bundle is still clearly lighter at 24 hours and its tips smell faint, travel is slow. Compare plain DPG with scented DPG too: if adding the oil speeds uptake noticeably, your blend is already thinner than DPG alone, and a lower load would make it slower, not faster. There is no published standard for how fast a reed should load, so the comparison against the ready-made arm is the yardstick, not an absolute number.

Test B and C: grams per day and the room, with a reed-count arm

Uptake tells you about travel. The bottles tell you what actually leaves and what you actually smell. Every bottle gets an example 45 ml fill — 45 g at an example 1.00 g per ml — at 25%: 11.25 g of oil and 33.75 g of carrier, weighed into the bottle. The third arm keeps DPG and adds two reeds, so you can see whether more surface does what a thinner carrier would.

Round 1 · 10 × 50 ml bottles · 25% by weight · black fibre reeds
DPG control, ready-made arm, reed-count arm
Arm Bottles Carrier Reeds What it isolates
A — control B1–B3 The DPG you use 6 Your current setup
B — carrier B4–B6 Pure Performance Base 6 Does a ready-made carrier change g/day and score?
C — surface B7–B9 The DPG you use 8 Does 1.33× the reeds do what a new carrier would?
Hold-back B10 The DPG you use None, capped Clarity reference at 7 days
Fill fixed at 45 ml · example densities · DPG and Pure Performance may differ — weigh both
Oil and carrier grams at ±5% density
Example density 45 ml weighs Oil at 25% Carrier
0.95 g/ml 42.75 g 10.69 g 32.06 g
1.00 g/ml 45.00 g 11.25 g 33.75 g
1.05 g/ml 47.25 g 11.81 g 35.44 g
1
Mix by weight and restWeigh carrier then oil into each tared bottle, cap and invert ten times. Rest every bottle 24–48 hours — the CSI base pages' rest period; hold the DPG arms to the same rest — checking clarity against a white card and a black card at 0, 24 and 48 hours.
2
Reeds in, weigh, placeDay 0: 6 reeds in B1–B6, 8 in B7–B9, none in B10. Weigh each bottle with its reeds. Place B1–B9 on one shelf in the test room, mixing the arms along the shelf, away from vents and windows. Use one flip schedule for every bottle and write it down.
3
Weigh on fixed daysDays 1, 3, 7, 14 and 21 at the same time of day, room temperature logged. Calculate g/day from day 3 to day 21, after the reeds have loaded.
4
Score blindDays 7, 14 and 21: a helper places one bottle at a time in the closed test room for a fixed period — for example 30 minutes — and you score it at the door and at 1 m on your written house scale, without knowing the arm.
Arithmetic only — NOT a figure for DPG or any CSI base · 45 g fill · liquid cost uses Pure Performance at production rates
What different measured rates would mean for a 50 ml bottle
If your bottle loses… Projected life Liquid cost per day (₹108.70 fill)
0.50 g/day 90 days ₹1.21
0.75 g/day 60 days ₹1.81
1.00 g/day 45 days ₹2.42
1.50 g/day 30 days ₹3.62
2.00 g/day 22 days ₹4.83

Put your measured rates for each arm into that arithmetic. If arm A meets your life target comfortably but scores weakly, and arm C (more reeds) scores better while still meeting the target, you have solved the problem by adding reeds — the cheapest change on this page. If arm B scores better at a similar g/day, the ready-made carrier is releasing the fragrance more effectively from the same loss, and that is a genuine carrier effect. If arm B simply loses more grams per day and smells proportionally stronger, it has moved along the life–strength curve, which fast versus slow-evaporating bases helps you choose between.

A thick carrier is a suspect, not a verdict. Three weighings convict it or clear it.
— CandleMakingSuppliesIndia

Reading all three together

Most quiet DPG diffusers are not a viscosity problem. The sheet below shows you which kind yours is.

Combine the uptake sheet, the bottle sheet and the blind scores using the five patterns in the first table. Most quiet DPG diffusers turn out to be pattern 2, 3 or 5, not pattern 1. The reason is practical: DPG at 25% oil is a blend, not pure DPG, and reeds usually load within a day in most carriers. What DPG is commonly described as doing — evaporating relatively slowly — is a release question more than a travel question, and release can be changed by reed count, by room conditions, and by load before you change carrier.

One row per bottle · g/day = (day 3 g − day 21 g) ÷ 18
Round 1 bottle record sheet
Bottle Arm Reeds Fill g Day 3 g Day 21 g g/day Blind d7 / d14 / d21 Clarity 7 d
B1 A 6 ___ ___ ___ ___ ___ / ___ / ___ ___
B2 A 6 ___ ___ ___ ___ ___ / ___ / ___ ___
B3 A 6 ___ ___ ___ ___ ___ / ___ / ___ ___
B4 B 6 ___ ___ ___ ___ ___ / ___ / ___ ___
B5 B 6 ___ ___ ___ ___ ___ / ___ / ___ ___
B6 B 6 ___ ___ ___ ___ ___ / ___ / ___ ___
B7 C 8 ___ ___ ___ ___ ___ / ___ / ___ ___
B8 C 8 ___ ___ ___ ___ ___ / ___ / ___ ___
B9 C 8 ___ ___ ___ ___ ___ / ___ / ___ ___
B10 Hold 0 ___ — — — — ___

Two cautions. First, three bottles per arm is a screen; repeat any arm that looks better with more bottles before you change production. Second, keep the room honest: a test in an air-conditioned bedroom will read differently from a warm living room, and cooler Indian winters and fast summer evaporation show how much temperature alone can move the grams. Record the room temperature on every weighing day so you can see whether a change in g/day tracks the weather rather than the arm.

The priced test kit

Listed, in-stock CSI packs, CSI live pricing, pulled 14 October 2026 for the base, bottles, reeds and scale and CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026 for the oil. Grams include a 5% working allowance. The DPG (322 g needed for the round) and the three narrow glasses for the uptake test are your own.

Round 1 · 10 × 50 ml bottles + 3 uptake glasses · 25% · black reeds
DPG viscosity test, everything CSI
Item Need Buy Price Skip if
Gold Reed Diffuser Bottle 50 ml 10 bottles 1 × pack of 10 ₹826.00 You sell in another bottle — test that one
Fiber Diffuser Reeds (Black) 69 reeds 1 × pack of 50 + 1 × pack of 25 ₹636.00 —
Pure Performance Base 137.8 g 2 × 100 g ₹650.00 —
Round 1, your own oil and DPG ₹2,112.00
Eucalyptus Spearmint (example oil) 139.1 g 1 × 100 g + 3 × 15 g ₹559.32 You hold the oil you will sell
Weighing Scale 1 1 ₹354.00 You own a scale with fine enough steps
Round 1, everything bought ₹3,025.32

The Pure Performance line is a good example of buying the right size for a test: two 100 g packs cover the 138 g the comparison arm needs for ₹650.00, where a 500 ml would cost ₹1,099.00. If arm B wins and you move to it, the 500 ml becomes the cheaper way to buy grams — it is cheaper per gram than the 100 g at any density above 0.676 g per ml.

Argued against our own interest, plainly. We sell ready-made bases; we do not sell DPG. If your test shows pattern 3 or 5 — the reeds load fine, and the room improves with more reeds or a smaller room — the right purchase is a pack of reeds at ₹400.00 for 50, not a base. Keep the DPG. Buy a base only if arm B beats both arm A and arm C on blind score while still meeting your life target.
Diwali is Sunday 8 November 2026. A 21-day bottle test started this week finishes around 4 November — too late to reformulate a festive run. If the DPG diffusers you make are already validated, ship them as they are; if they seem quiet, the reed-count arm is the one change you can test and act on within a week. Send us the DPG grade, oil and bottle on WhatsApp and we will help you plan the shortest useful test.
Plan my DPG test

The decision rule

Working decision rule · apply after the uptake test and day 21 · stop at the first true line
Keep DPG, add reeds, or change carrier
If this is true It means Do this
DPG blend clouded at 24–48 h or 7 days A compatibility problem, not viscosity Step the load down 5 points and retest — 7927
Arm C (8 reeds) scores better and still meets your life target Reed surface was the limit Keep DPG. Buy reeds: ₹400.00 per 50 black
Uptake normal, g/day normal, score weak in every arm Oil, load or room Buy nothing yet. Check load and room — 7962, 7965
Uptake slow, g/day low, score weak only in DPG arms DPG is limiting with this oil Move this fragrance to a ready-made base — 500 ml at ₹1,099.00
Arm B scores higher at a similar g/day The ready-made carrier releases this oil better Repeat with 6 bottles per arm, then buy 500 ml
Arm B scores higher but loses far more g/day A faster point on the curve, not a better carrier Decide by your life target — 7928

Write the outcome into your formula sheet with the reed count, load, room and dates. If you later change any of those, the conclusion about DPG may change too. Ready-made base versus DPG for commercial diffusers covers the consistency and documentation side of keeping DPG in a commercial range, and Augeo-type versus DPG versus alcohol explains where DPG sits among the other solvent routes.

The CSI products in this test

1
Arm B · ready-made comparison · 100 g size
Pure Performance Base — Professional Reed & Car Diffuser Base
CSI's product page states it is neutral, with "no added fixatives, no complex enhancements", for all fragrance families, 10–30% with 20% recommended and 25% typical, a 24–48 hour rest and a first flip after an hour. Its composition, viscosity and evaporation rate are not published, so it is a behavioural comparison, not a chemical one.
Size Price Per unit Bottles of base it covers
100 g ₹325.00 ₹3.25 per g 2.96 bottles
500 ml ₹1,099.00 ₹2.20 per ml 14.81 bottles at 1.00 g/ml (example)
₹650.00 for 2 × 100 g Buy Pure Performance Base
2
Example oil · 11.25 g per bottle at 25%
Eucalyptus Spearmint Fragrance Oil
Chosen because it is the cheapest 15 g in CSI's catalogue, which keeps a viscosity test inexpensive. No diffuser behaviour, viscosity or IFRA percentage is published — ask on WhatsApp for its IFRA certificate and read the Category 10A limit before you settle at 25%.
Pack Price Per gram Bottles at 11.2 g oil
15 g ₹68.44 ₹4.56 1.33
50 g ₹212.40 ₹4.25 4.44
100 g ₹354.00 ₹3.54 8.89
500 g ₹1,652.00 ₹3.30 44.44
1 kg ₹3,068.00 ₹3.07 88.89
₹559.32 for 1 × 100 g + 3 × 15 g Buy Eucalyptus Spearmint
3
6 and 8 per bottle · uptake bundles of 3
Fiber Diffuser Reeds (Black)
Fibre reeds, 20.3 cm; CSI does not sell rattan. The page says 6–8 reeds suit a 50–100 ml bottle, with more for stronger, faster diffusion — which is exactly what arm C tests. Diameter is not published, so thin-versus-thick comparisons use your own reeds.
Pack Price Per reed Bottles it dresses
Pack of 25 ₹236.00 ₹9.44 4 bottles at 6 reeds
Pack of 50 ₹400.00 ₹8.00 8 bottles at 6 reeds
Pack of 100 ₹800.00 ₹8.00 16 bottles at 6 reeds
Pack of 500 ₹4,000.00 ₹8.00 83 bottles at 6 reeds
₹636.00 for 1 × pack of 50 + 1 × pack of 25 Buy black fibre reeds
4
50 ml · pack of 10
Gold Reed Diffuser Bottle (clear glass, gold-tone screw cap)
Clear glass, gold-tone screw cap; 50 ml and 120 ml variants. Neck diameter and fill line are not published; this test uses an example 45 ml fill.
Variant Price Per bottle Stock
50 ml · pack of 10 ₹826.00 ₹82.60 In stock (14 Oct 2026)
120 ml · pack of 10 ₹1,062.00 ₹106.20 In stock (14 Oct 2026)
₹826.00 for the round Buy Gold Reed Diffuser Bottles
Using rattan reeds? The method is identical; your reeds replace the fibre ones in every arm. CSI sells fibre reeds only — fibre or rattan? compares them. Bases are in Reed & Car Diffuser Base and oils in Fragrance Oils.
Why trust this guide

CANDLEMAKINGSUPPLIESINDIA supplies raw materials, not finished diffusers. We sell ready-made bases and not DPG, so the easy answer is "DPG is too thick — switch". This page tells you DPG alone is a common carrier, gives no invented viscosity figures, and builds a reed-count arm into the test because adding reeds is often the cheaper fix.

Base, reed, bottle and tool prices are CSI live pricing, pulled 14 October 2026; fragrance-oil prices are CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026. Every blend split, ml-to-gram conversion, per-bottle cost, kit total and cost-per-day figure on this page is computed and shown to two decimals so you can check it. CSI publishes no composition, density, viscosity or evaporation data for its bases, so every density used here is a labelled example and every g/day figure is either yours to measure or a labelled arithmetic grid.

Bottle counts per arm, weighing days, the clarity checkpoints, the room-scoring protocol and the decision thresholds are labelled working practices, not industry standards — none exists for reed diffusers. The 45 ml fill, the 1.00 g per ml density, the 40 g uptake glasses, the bundles of 3 reeds, the 30-second drip and the g/day values in the arithmetic grid are labelled working choices, not standards. For SDS or technical-data questions on a base, an oil's IFRA certificate, bulk quotes or GST invoicing, message us on WhatsApp at +91 7397976926.

Frequently asked questions

Is DPG good for reed diffusers?
It is commonly used and commonly described as low-odour and relatively slow-evaporating. Whether it is good for your oil and room depends on clarity at your load, how fast your reeds load, grams lost per day and a blind room score — test those against a ready-made base.
Why is my DPG reed diffuser not working?
Check the cheap causes first: too few reeds, a low load, a large or air-conditioned room, or reeds that have not loaded yet. Then compare it side by side with a ready-made base. DPG's viscosity is one suspect, not the only one.
How long does it take for reeds to absorb diffuser oil?
It depends on the liquid and the reeds, and there is no published standard. Measure it: weigh a bundle of three reeds dry and again after 1, 3 and 24 hours in the liquid, and smell the tips.
Can I thin DPG for reed diffusers?
Makers commonly blend DPG with other solvents, but every addition changes clarity, evaporation and safety, and alcohol adds flammability. Test any change against your current blend. Never thin a blend with water.
How many reeds should I use with DPG?
CSI's reed page suggests 6–8 for a 50–100 ml bottle, more for stronger and faster diffusion. With a slow carrier, test one or two more reeds against your usual count before changing the carrier.
What ratio of DPG to fragrance oil for reed diffusers?
This test uses 25% oil and 75% DPG by weight, the working blend CSI's Pure Performance page calls typical. The oil's IFRA Category 10A limit caps it — ask your supplier for the certificate.
Measure before you switch
Weigh the reeds. Weigh the bottles. Score the room. Then decide.
Pure Performance Base ₹325.00 for 100 g; black fibre reeds ₹236.00 for 25 or ₹400.00 for 50; Gold 50 ml bottles ₹826.00 for ten; Eucalyptus Spearmint from ₹68.44 for 15 g. Tell us the DPG grade, oil and reed count and we will help you plan the test.
See Pure Performance Base Plan my DPG test on WhatsApp
Continue the read — Which reed diffuser base should I buy?
Editorial standards & sources
About this guide: Written by the CANDLEMAKINGSUPPLIESINDIA team. The uptake test, the three-measurement reading and the decision rule apply to any carrier and any reeds; the products named are CSI's. CSI does not sell DPG.

Customer reviews: The six reviews at the top of this page are genuine, published Judge.me reviews left by CSI customers on the product pages named on each card — Eco Candle Wicks, Premium Candle Wicking Needle and Bamboo Wick Holder. They are general product reviews, not assessments of the guidance set out here. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on the three reviews Judge.me recorded as verified — Monika Deep, Subhankar Roy and Sneha Tamang; the reviews from Ashwini, LJ and Lalitha Jagan are published but not recorded as verified, and carry no badge.

Figures used on this page: Diffuser bases, reeds, bottles and tools — CSI live pricing, pulled 14 October 2026: Pure Performance Base ₹325.00 / 100 g and ₹1,099.00 / 500 ml; Longevity Base ₹1,296.00 / 500 ml; Lift Base ₹1,099.00 / 500 ml; Depth Base ₹1,099.00 / 500 ml; Softness Base ₹1,099.00 / 500 ml; CSI HyperDiffusion Base™ ₹1,499.00 (out of stock, not offered); Fiber Diffuser Reeds (Black) ₹236.00 / 25, ₹400.00 / 50, ₹800.00 / 100, ₹4,000.00 / 500; Fiber Diffuser Reeds (White) ₹265.00 / 25, ₹450.00 / 50, ₹900.00 / 100, ₹4,500.00 / 500 (both 20.3 cm long; diameter not published); Gold Reed Diffuser Bottle ₹826.00 / pack of 10 × 50 ml, ₹1,062.00 / pack of 10 × 120 ml; Weighing Scale ₹354.00; Silicon Measuring Beaker ₹300.00 (100 ml), ₹600.00 (250 ml); CSI Pro Mixer ₹349.00. Fragrance oils — CSI live pricing, pulled 24 September 2026, stock re-checked 14 October 2026: Eucalyptus Spearmint Fragrance Oil ₹68.44 / 15 g, ₹212.40 / 50 g, ₹354.00 / 100 g, ₹1,652.00 / 500 g, ₹3,068.00 / 1 kg.

Non-price figures and assumptions: Load convention: fragrance load is a share of the total blend by weight (oil g = blend g × L; base g = blend g × (1 − L)). Where millilitres are turned into grams, the page uses a labelled example density of 1.00 g per ml with a ±5% sensitivity (0.95–1.05 g/ml) — weigh 100 ml of your own blend to get yours; the 120 ml and 50 ml bottle sizes are listing sizes, not fill lines. Worked example: 45 ml example fill in the Gold 50 ml bottle = 45 g at the example density; at 25% = 11.25 g oil + 33.75 g carrier. Working practices: uptake glasses of 40 g with bundles of 3 reeds weighed dry and at 1 h, 3 h and 24 h after a 30-second drip; 3 bottles per arm with 6 or 8 reeds plus a capped hold-back; 5% mixing allowance; weighings on days 0, 1, 3, 7, 14 and 21; blind scores on days 7, 14 and 21; clarity at 0, 24 and 48 hours and 7 days. The g/day values in the grid are arithmetic examples; the liquid cost per bottle uses the oil's 1 kg rate and Pure Performance 500 ml at the example density. DPG descriptions (low-odour, relatively slow-evaporating, more viscous than many lighter solvents) are general industry descriptions, not CSI data; no viscosity figure is given for any liquid. What CSI's base pages state (quoted as claims to test, not CSI measurements): every base page gives a 10–30% fragrance range of the total blend and a 24–48 hour rest before bottling; Pure Performance — neutral, "no added fixatives, no complex enhancements", all families, "start at 10% … up to a maximum of 30%", "20% recommended", "typical working blend 75% base + 25% fragrance", "flip reeds after the first hour"; Longevity — oriental/amber, woody, resinous/balsamic, spicy and gourmand families, slower "cold diffusion", avoid light florals, fresh citrus and aquatics, "heavy oils like oud can cloud at maximum load in some bases", 2–3 hours before the first flip; Lift — "perfumery-grade", floral, citrus, green and fruity families; Depth — warmth, roundness, "slow diffusion", chypre, leather, smoky and rich gourmand, "stabilises tricky sweet and spicy fragrance oils"; Softness — soft florals, powdery/musky and light gourmand. Marketing lines such as "performs in Indian climates", "no separation" and "even wicking" are claims to test. Some base pages mention rattan; CSI sells fibre reeds, not rattan. CSI publishes no composition, density, viscosity, evaporation rate, flash point or shelf life for any base, and no throw, evaporation or longevity data for any base, oil or reed; reed diameter, bottle neck size and fill line are not published. No CSI base is ranked above another on this page — the five are separated only by what their own pages say they are for. Material costs exclude labour, labels, boxes, freight and GST. Diwali 2026 falls on Sunday 8 November.
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