My Jar Supplier Changed the Internal Diameter Slightly While Keeping the Same External Dimensions — Should I Treat It as a New Candle System for Wick Testing?

My Jar Supplier Changed the Internal Diameter Slightly While Keeping the Same External Dimensions — Should I Treat It as a New Candle System for Wick Testing?

 

Weighing Scale ₹354.00 Shot Glass Jar 130 g ₹288.00 a pack · confirm count Eco C1 10-pack out of stock · C2 10 ₹94.40
Jar lot changed · same outside
Measure the inside of every lot; bracket again only when the trigger rule says new system.
★★★★☆
"I like the material of tin jar no doubt but some are little dent but the Mandala design is awesome. One more thing its difficult to open after I ready my candle and closed with lid its had to open, its both good point and the same time difficult to work. Thankyou"
Jinal MonilVerified buyer · Mar 2026
Tin Containers for Candle Making - 85 & 135g
★★★★★
"The jars were of good quality"
Soumili GopeVerified buyer · Mar 2026
Clear Glass Jar with Golden Lid (150 gram)
★★★★★
"Good product"
Biny AbrahamVerified buyer · Feb 2026
Black Glass Jar with Black Lid (150 gram) (Deliveries Starting 5th Dec)
★★★★★
"Very good"
Tina Lynette Lazaro MogantiVerified buyer · Dec 2025
Black Matte Glass Jar
★★★★★
"Nice glass jars, they look cute. I like the packaging as well."
AshwiniSep 2025
White Matte Glass Jar
★★★★★
"One of the best wax for container Candles. Easy to work with, especially if you are a beginner."
ThenirvaofficialVerified buyer · Nov 2025
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
★★★★☆
"I like the material of tin jar no doubt but some are little dent but the Mandala design is awesome. One more thing its difficult to open after I ready my candle and closed with lid its had to open, its both good point and the same time difficult to work. Thankyou"
Jinal MonilVerified buyer · Mar 2026
Tin Containers for Candle Making - 85 & 135g
★★★★★
"The jars were of good quality"
Soumili GopeVerified buyer · Mar 2026
Clear Glass Jar with Golden Lid (150 gram)
★★★★★
"Good product"
Biny AbrahamVerified buyer · Feb 2026
Black Glass Jar with Black Lid (150 gram) (Deliveries Starting 5th Dec)
★★★★★
"Very good"
Tina Lynette Lazaro MogantiVerified buyer · Dec 2025
Black Matte Glass Jar
★★★★★
"Nice glass jars, they look cute. I like the packaging as well."
AshwiniSep 2025
White Matte Glass Jar
★★★★★
"One of the best wax for container Candles. Easy to work with, especially if you are a beginner."
ThenirvaofficialVerified buyer · Nov 2025
Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles
Reviews collected and published through Judge.me on candlemakingsuppliesindia.store. They are general reviews of the products named on each card, not assessments of the advice set out below. Wording is unedited.
Shop the Weighing Scale — ₹354.00 Send your lot sheet
✓ Prices verified 29 September 2026, stock checked per size ✓ MSDS and IFRA documentation on request on WhatsApp ✓ Raw materials only — CSI does not sell finished candles
CSI Wick Lab · Commercial Matrix
Same outside dimensions can hide a thicker wall, a heavier base and a smaller candle. Measure every incoming lot at three heights plus base, weight and fill, and let a rule written in advance decide whether it is a new candle system.
3 heights
inside diameter measured per sampled jar, plus wall, base, weight and fill · CSI live pricing, September 2026
Quick answers — read this first
My jar supplier changed the inside diameter but the outside is the same. New candle system? Measure first, then decide by rule. Sample five jars from the new lot, record the inside at the rim, the middle and about 1 cm above the base, the wall, the base, empty weight and water to your fill line, and compare with the lot your wick was approved in.

When is it a new system? Our trigger rule (judgement): pool area more than about 15% different at any height, the base more than about 2 mm thicker or thinner, a changed shape or glass, or the fill line no longer holding your labelled fill. Any one of those means a new wick bracket and full life. Smaller changes are a screen or a group retest; changes inside the old lot's own spread are logged and accepted.

Why does "slightly" matter? In our worked example a wall 1.2 mm thicker and a base 3 mm thicker leave the outside untouched but take 2.4 mm off the inside at the rim (-8.7% of pool), add 52 g of glass and cut the water to the fill line by about 13.5%. The old 125 g fill no longer fits.

What does the check cost? Time and a scale (₹354.00, or yours). If the lot triggers, the 6 cm bracket in our example costs ₹946.61 in materials.
The short answer
The verdict: not automatically. A changed inside is a measurement question first; the trigger rule turns the measurements into "same", "changed" or "new system".
The sheet: five jars per lot from at least two cartons (judgement): inside at three heights, wall, base, height, empty weight, water to the fill line, glass and lid, compared with the approval lot.
The trigger (judgement): new system if pool area changes more than about 15% at any height, the base by more than about 2 mm, the shape or glass changes, or the fill no longer fits. Between about 2% and 15% area: screen or retest representatives. Inside the old lot's spread: accept and log.
The honest limit: no CSI jar listing states an inside diameter, wall or base, and CSI lists no callipers or non-contact thermometer. Your sheet is the only record of what your candle is burning in.
Shop: Weighing Scale · Shot Glass Jar 130 g · Eco C1/C2 · Black Shiny 6 cm jar · all glass jars
In this guide
Same outside, smaller candle: two lots, cut in half Cross-sections to scale (3 px per mm). Worked-example measurements, not CSI data. Dashed line: fill line 12 mm below the rim. Grey: glass. The listing would describe both lots the same way. Lot A · approval lot the jars your wick was tested in outside 60 mm · base 6 mm · wall 3 mm Lot B · new lot same outside dimensions outside 60 mm · base 9 mm · wall 4.2 mm rim: 54.0 → 51.6 mm pool area -8.7% middle: 53.6 → 51.2 mm pool area -8.8% 1 cm up: 53.0 → 50.4 mm pool area -9.6% base: 6 → 9 mm empty weight: 142 → 194 g water to line: 139.4 g → 120.5 g Verdict for lot B: NEW candle system Pool area alone (-8.7% to -9.6%) says "changed"; the 3 mm thicker base and 13.5% less fill to the line trigger a new bracket.
Two lots of a 60 mm jar cut in half at true scale. The outsides match, so the listing and the shelf cannot tell them apart; the inside is narrower, the base thicker and the fill line holds less in lot B. All measurements are a worked example; measure your own lots.
The fastest lot check · ₹354.00
Candle Making Weighing Scale: empty weight and water to the fill line, every lot
A 6 cm listing to measure · ₹288.00 a pack
Shot Glass Jar 130 gram: confirm the pack count (title 6, description five)
WhatsApp +91 7397976926
Send your lot sheet; we will help you read it against the trigger rule
Straight answer
My jar supplier changed the internal diameter slightly while keeping the same external dimensions. Should I treat it as a new candle system for wick testing?
Treat it as a suspect system until you have measured it, and decide by a rule you wrote before the jars arrived. Same outside with a smaller inside means thicker glass somewhere, and the wick only ever sees the inside: the pool's width, how far the flame's heat must travel to the wall, how much wax fills to your line and how high the wick tab sits on the base. So sample five jars from the new lot, from at least two cartons, and record the inside diameter at the rim, the middle and about 1 cm above the base, the wall, the base thickness, empty weight and water to your fill line. Compare with the lot your wick was approved in. It is a new system, needing a fresh bracket and full life, if the pool area changes by more than about 15% at any height, the base changes by more than about 2 mm, the shape or glass changes, or your labelled fill no longer fits. Smaller area changes call for screening or retesting representatives; differences inside the old lot's own spread are logged and accepted. In our worked example the pool shrank about 9–10%, but the base grew 3 mm and the fill line held about 13.5% less, so lot B is a new system.
One line: the wick sees only the inside; measure every lot at three heights plus base, weight and fill, and let a written trigger decide "same", "changed" or "new".
To measure a lot you need almost nothing: a steel ruler, a strip of card, water and a scale. The Candle Making Weighing Scale is ₹354.00; CSI lists no callipers. Buy wicks only if the lot triggers a bracket.
Weighing Scale — ₹354.00

Same outside, different candle

The shelf, the box and the listing all see the outside. The flame only ever sees the inside.

A jar's outside dimensions are what suppliers describe and what your packaging is built around, so a supplier can change the glass and honestly say "same size". None of CSI's 72 container listings states an internal diameter, and many jar listings describe the outside or don't say which. If the wall gets thicker with the outside held, every inside measurement shrinks; if the base gets thicker, the whole candle sits higher. Neither shows from the shelf. Why the outside figure is the wrong one for wicks in the first place is the external-versus-internal post.

Four things change for the wick when the inside changes. Pool area (π r² on the inside radius) shrinks or grows with the square of the diameter. Reach: a centred wick's distance to the wall changes by half the diameter change. Fill: the same fill line holds a different weight, so either the label weight changes or the fill line does. Base: a thicker base lifts the wick tab and the final centimetre, and thick glass bases are commonly linked to different heat behaviour near the end of a burn (a tendency; see the thick-base post). A wick approved in lot A was approved for all four of lot A's numbers.

Mistake: pouring the new lot at the old fill weight because the outside matches. What happens: in a jar that holds less, the same grams sit higher, headspace shrinks, the flame sits nearer the lid line, and the candle's depth-to-width ratio changes, so the old wick result no longer applies. Fix: weigh water to your fill line on the new lot before you pour a single production candle.

The incoming-lot measurement sheet

One row per sampled jar, one reference row from the approval lot. Ten minutes a lot.

Keep a sheet for every lot of every jar you produce in, and keep the approval lot's numbers as the reference row, ideally with a few jars from that lot retained, unfilled, so you can re-measure them. The fields below are the minimum we would keep; the sampling numbers are our judgement for a small brand.

Incoming-lot measurement sheet · fields
Sample 5 jars from at least 2 cartons per lot (judgement) · record each jar, then the lot mean and range
Field How When Why it matters to the wick
Lot ID, supplier, date received, cartons, jars in lot Delivery note and carton labels once per lot traceability
Jars sampled and which cartons they came from Pick 5 from at least 2 cartons (judgement) once per lot one carton can hide a mould change
Outside diameter at the rim Ruler or callipers, two directions each sampled jar proves "same outside"
Inside diameter at the rim, two directions Inside edge to inside edge through the centre each sampled jar the pool at burn 1
Inside diameter at mid-height and about 1 cm above the base Card strip curled inside: overlap length ÷ 3.14 each sampled jar the pool lower down; shows taper
Wall at the lip Callipers (CSI does not list any); or outside minus inside, halved each sampled jar cross-check of the two diameters
Base thickness Ruler to the inside floor and to the outside bottom; difference each sampled jar where the wick tab sits and how the last centimetre burns
Overall height Ruler on a flat surface each sampled jar fill line and headspace
Empty-jar weight Tared scale each sampled jar more glass with the same outside means less inside
Water to your fill line Tared scale, water poured to the marked line each sampled jar what the jar holds; wax ≈ 0.86–0.9 × water (rule of thumb)
Glass: colour, coating, seams, chips, lid fit Look and try the lid each sampled jar a different glass is a different system
Comparison with the approval lot, and the verdict Lot means and ranges against the reference row once per lot same, changed or new system

Measuring one jar

1
Weigh it emptyTare the scale, weigh the jar without its lid, write it down. If the outside matches and this number has gone up, glass has moved inward somewhere.
2
Rim: outside, then insideOutside across the rim twice at right angles; then inside edge to inside edge through the centre, twice. Callipers are more precise if you own them; CSI does not list any.
3
Middle and near the baseCurl a strip of card inside the jar at mid-height and about 1 cm above the floor, mark the overlap, flatten it and divide the length by 3.14. That catches a taper the rim figure hides.
4
Base and heightLower a ruler to the inside floor and note the depth; measure the outside height; the difference is the base. Note any dome or kick in the floor.
5
Water to your fill lineMark your fill line (ours sits 12 mm below the rim), tare the empty jar, pour water to the mark, weigh. Wax is roughly 0.86–0.9 times the water weight by a common candle-maker rule of thumb; confirm with a weighed test pour.
6
Look and fitGlass colour and clarity, seams, chips on the rim (reject chipped jars), and whether your lid still fits. Dry the jar fully before it goes back into stock.

Five jars from a lot of 288 is 1.7% of it: enough to catch a mould change or a shifted wall, not enough to catch a rare flaw, which is a separate inspection. If the five disagree with each other by more than the approval lot did, measure five more before deciding; a mixed lot may need sorting. The measurements to compare when you switch to a different supplier are the supplier-switch post; this sheet is for the same jar arriving in a new lot.

Lot A against lot B: a worked example

Every number below would be invisible on the listing. Together they describe a different candle.

A maker approved a single-wick build in lot A of a 60 mm × 80 mm glass: Luxury Soy Wax CSI 464 at 8%, a 125 g fill (10 g oil + 115 g wax) and Eco C1. Lot B arrives with identical outside figures. The five-jar means:

Lot sheet, lot means · worked example
Lot A = approval lot (reference row) · lot B = new lot · pool area = π r² on the inside radius · water by cylinder geometry on the mean diameter · declared
Measure Lot A Lot B Change What it means
Outside diameter 60.0 mm 60.0 mm none same outside
Wall at the lip 3 mm 4.2 mm +1.2 mm outside − 2 × wall = 54.0 and 51.6 mm
Inside at the rim 54.0 mm 51.6 mm −2.4 mm pool 22.90 → 20.91 cm² (-8.7%)
Inside at mid-height 53.6 mm 51.2 mm −2.4 mm pool 22.56 → 20.59 cm² (-8.8%)
Inside 1 cm above the base 53.0 mm 50.4 mm −2.6 mm pool 22.06 → 19.95 cm² (-9.6%)
Taper (rim minus near-base) 1.0 mm 1.2 mm +0.2 mm shape similar
Base thickness 6 mm 9 mm +3.0 mm wick tab and the last centimetre sit 3 mm higher
Empty-jar weight 142 g 194 g +52 g (37%) the fastest single warning
Water to a fill line 12 mm below the rim about 139.4 g about 120.5 g -13.5% wax column 62 → 59 mm
Wax to that line (0.86–0.9 × water) about 120 g–125 g about 104 g–108 g — the approved 125 g fill no longer fits

Read it top to bottom. The outside is unchanged, so the box, the label and the shelf are happy. The wall is 1.2 mm thicker, which takes 2.4 mm off the inside at the rim and 2.6 mm near the base: a pool -8.7% smaller at the top and -9.6% smaller near the bottom. The base is 3.0 mm thicker, so the wick tab and the last centimetre of wax sit 3 mm higher in the glass. The empty jar is 52 g heavier, the single fastest warning on the sheet. And the water to the same fill line is -13.5% different, so the approved 125 g no longer fits below that line: our worked example drops lot B to 100 g (8 g oil + 92 g wax), 25 g less candle per jar, which changes the product, its label weight (net-quantity rules apply; check current Legal Metrology requirements, not legal advice) and its price per gram to your customer.

The two-number shortcut
If you only have two minutes per lot, weigh the empty jar and the water to your fill line. Same outside, heavier jar, less water: the glass has moved inward and the full sheet is needed. Both unchanged: the inside has probably not moved, though a base and wall can trade glass, so do the full sheet on the first few lots of any new supplier.

The trigger rule: same, changed or new system

Write the rule before the jars arrive. Afterwards, every change looks small.
Trigger rule for an incoming jar lot · our judgement, labelled
Compare lot means with the approval lot · the first row that applies wins · pool area at the rim, middle and near the base
Verdict Any one of these What you do
New candle system Pool area more than about 15% different at any height; base more than about 2 mm thicker or thinner; taper reversed or the shape changed; different glass, colour or coating; your labelled fill no longer fits below the fill line Fresh wick bracket in the new lot and full life before production; re-set the fill weight and label
Changed system: triage Pool area about 5–15% different at any height, everything else inside the limits above Retest group representatives and borderline oils through full life, carry the rest with a production check (the triage in the 7.5 to 8 cm post)
Changed system: screen Pool area about 2–5% different, everything else inside the limits Screen one representative per oil group over burns 1–3; burn one candle from the first production batch to full life
Same system, watch Pool area under about 2% different, but the five jars spread more than the approval lot did Accept; burn one candle from the first production batch to full life; measure ten jars from the next lot
Same system Every figure inside the approval lot's own spread Accept and log the sheet

The area bands match the ones this cluster uses for a deliberate jar change: under about 5% is lot-variation territory, a deliberate 5 mm step lands around 14%, and over 15% is a different jar. The 2% line is ours, so that a lot sitting inside its own measuring error is not sent to the burn bench. The base and fill triggers are what make this rule specific to supplier drift: a supplier holding the outside can move glass into the base without changing the rim much, and neither shows in a rim measurement alone. In the worked example, lot B's pool change (-8.7% to -9.6%) would only make it a changed system, but the 3.0 mm base and the fill that no longer fits each trigger a new one.

Argued against our own interest: most lots will pass as "same system", and the right purchase after a passing sheet is nothing. We would rather you spend ten minutes with a ruler than buy a bracket's worth of wicks for a lot that never changed.

If the lot triggers: the new-system bracket

A new system gets a real bracket: one variable, a control, three candles a cell.

For lot B the bracket runs in lot B jars at the new fill, with the old lot as a control: three candles on the approved Eco C1, three on Eco C2 (one rung up, because the inside is smaller but the base and fill changed too, and the direction is not obvious), plus two lot A candles on C1 at the old fill as the reference. At about 5 cm inside, C1 → C2 is CSI's whole honest bracket; Cotton Braided's page describes it for candles "exceeding 8 cm". The costing uses Citrus Lemon Fragrance Oil as a stand-in house oil (page: "candles (6-10%)"); use your own.

New-system bracket · bill of materials · worked example
8 candles · CSI 464 at 8% · lot B at 100 g, lot A controls at 125 g · CSI live pricing, 29 September 2026
Item Size bought Used Cost of what is used
Citrus Lemon Fragrance Oil 100 g, ₹300.00 (₹3.00 a gram) 68 g (32 g left) ₹204.00
Luxury Soy Wax CSI 464 1 kg, ₹507.40 782 g (218 g left) ₹396.79
Eco C1 · Eco C2 C1 20 ₹118.00 (10-pack out of stock) · C2 10 ₹94.40 5 C1 (15 spare) · 3 C2 (7 spare) ₹29.50 · ₹28.32
Lot B jars (here, a shot-glass-style 60 mm jar) one pack at ₹288.00, if it holds six 6 jars ₹288.00
Bracket, materials consumed 8 candles ₹946.61

Costs exclude labour, freight, packaging and GST, and the lot A control jars are ones you already hold. Starting with none of the oil, wax or wicks, the cash outlay is ₹1,019.80 plus the lot B jars. Pour all eight on one day, cure them identically, burn in still air within sight, and log the same lines as the original approval so the records compare. CSI 464's page states "Pour Temperature 80°C – 90°C"; with no heat figure on a jar page, pour at the low end and pre-warm clean jars (judgement). Approve only after full life to about 1 cm left, with the glass watched and never touched; the raised base makes the final centimetre the part to watch, and the bottom-zone screen in the bottom-zone post can show it early without replacing full life.

Reading the bracket · our judgement
"Passes" = at least 2 of 3 candles reach the wall by burn 2–3 with no heat signal, then full life · CSI rungs C1 → C2
Lot B on C1 Lot B on C2 Decision
Passes, matching the lot A controls Runs hotter Keep C1 for lot B at the new fill; update the build sheet and label
Fails (ring, small pool) Passes, calm C2 for lot B; keep the lots separate in stock and on the sheet
Fails Passes the ring, fails on heat late The answer sits between C1 and C2, where CSI lists no sized, tabbed wick: ask us, consider another supplier's wick, or go back to the jar supplier
Either passes, but the controls behave differently from the original approval — Something else moved (wax lot, room, oil lot): investigate before trusting the lot comparison

Whether two rungs are enough to call the bracket closed is the bracket-closure post; how a slight first-burn ring in a 6 cm jar should be read before any wick change is the 6–7 cm hub.

Habits that make lot changes cheap

The cheapest lot change is the one you saw coming.

Keep reference jars. Hold back a few empty jars from every approval lot, labelled, so a new lot can be compared against glass, not memory. Ask for lot or batch codes on the carton and write them on the sheet; ask your supplier to tell you before a mould or glass change. Never mix lots in one production run until the sheet says "same system": a mixed run turns a measurable lot difference into random complaints. Store the sheets with your burn data so the next wick decision starts from evidence; organising hundreds of results is the burn-data post. A changed glass that kept the same listed capacity has its own diagnostic, the changed-glass post.

If your supplier's lots keep drifting, the honest fix may be a second, steadier source rather than endless retests, or a single standard jar measured hard every time (the one-jar post). CSI's own jar listings describe dimensions without stating inside diameters, walls or bases, so the same sheet applies to jars bought from us: measure our lots the way you measure anyone's.

Argued against our own interest: if you buy jars from CSI and a lot measures differently from your approval lot, tell us and treat it exactly as this page says. We do not publish lot dimensions, and we would rather you test than trust a listing, including ours.

Buying for lot control

Four items, chosen on page wording, price and stock on 29 September 2026. CSI publishes no wick-performance data and no jar lot dimensions, so nothing here is ranked on burn results or glass quality.

1
jar · a 6 cm listing to measure, lot by lot
Shot Glass Jar (Pack of 6) 130gram
The page states "Height - 8cm", "Diameter - 6cm" and "Fill Capacity - 130gram", and says nothing about which diameter, the wall, the base or a hot-pour figure; its heat wording is "Their sturdy design ensures safe, stylish burning", which is not a rating. That is normal for listings, and it is exactly why your incoming-lot sheet exists: the listing would read the same for lot A and lot B. A listing discrepancy to resolve first: the title says "Pack of 6" while the description says "pack of five" (the handle says 5). At ₹288.00 that is ₹48.00 or ₹57.60 a jar, ₹9.60 apart; confirm the count on WhatsApp before you plan a bracket around it. With no heat figure stated, pour at the low end of your wax's range and pre-warm clean jars (judgement).
Pack Price Per jar In this test
One pack (title: 6 · description: five) ₹288.00 ₹48.00 if 6 · ₹57.60 if 5 six lot B jars for the bracket; confirm the count before you plan
₹288.00 a pack; per jar depends on the count. Buy — ₹288.00
2
tool · the two fastest lot checks
Candle Making Weighing Scale
Two numbers per jar catch most inside changes without callipers: empty weight (more glass with the same outside means less inside) and water to your fill line (what the jar really holds). In our worked example lot B weighed 52 g more empty and held -13.5% less water. The page describes a digital scale reading "in grams or ounces" and states no capacity or resolution in the text we captured; check it with a known weight. Argued against our own interest: any checked kitchen scale that reads to the gram does this job.
Item Price Per unit Use
Single ₹354.00 ₹354.00 empty weight and water to the fill line, every sampled jar
₹354.00, once; used on every lot. Buy — ₹354.00
3
wick · the 6 cm bracket, if the lot triggers
Eco Candle Wicks — Thin (C1) and Thick (C2)
At about 5 cm inside, CSI's honest bracket is C1 against C2; Cotton Braided's page describes it for candles "exceeding 8 cm", well outside this jar. The page states no size or jar range in the text we captured, and there is no sized, tabbed wick between C1 and C2. Stock on 29 September 2026: the C1 10-pack is out of stock; buy the 20.
Pack Price Per wick In this test
C1 10 ₹59.00 — Out of stock ₹5.90 Out of stock on 29 September 2026
C1 20 ₹118.00 ₹5.90 3 lot B candles + 2 lot A controls, 15 spare
C2 10 ₹94.40 ₹9.44 3 lot B candles, 7 spare
C1 50 to 1,000 · C2 20 to 1,000 from ₹188.80 same per wick production, after the new system passes full life
Bracket wicks: C1 20 + C2 10 = ₹212.40. Buy C1 20 — ₹118.00
4
jar · a second 6 cm source to compare against
Black Shiny Glass Jar with Golden Lid
One of eight CSI glass listings that state 6 cm, all in stock on 29 September 2026. The page says "Capacity: 120 gm" and "Dimensions: 6 cm diameter, 6.5 cm height", with no inside diameter and no heat rating in the text we captured. If you are qualifying a second source because your main supplier's lots drift, buy one and run the same sheet on it: a different jar is a new system until its numbers say otherwise.
Pack Price Per jar In this test
Pack of 1 ₹47.20 ₹47.20 a single jar to measure as a second-source reference
Pack of 5 ₹236.00 ₹47.20 flat per jar; no saving over singles
₹47.20 for one reference jar. Buy 1 — ₹47.20
Diwali is 8 November 2026, 40 days from 29 September 2026. If a festive jar order is on its way, have your sheet and reference jars ready; a lot that triggers a new bracket needs weeks of full-life burns before production, so measure the day it lands. Ask us to confirm pack counts and dispatch for CSI jars.
WhatsApp to confirm jar details
The CSI principle
The wick was approved for an inside, not a listing.
Measure every lot at three heights plus wall, base, weight and fill; compare it with the approval lot; let a rule written in advance say "same", "changed" or "new system".
"Same outside is a packaging fact. Same candle is a measurement."
— CandleMakingSuppliesIndia
Why trust this guide

CandleMakingSuppliesIndia sells jars, wicks, wax and oils and does not sell finished candles. This page tells you to measure CSI's jar lots as carefully as anyone's, flags a pack-count discrepancy on one of our own listings, and says most lots will need no purchase at all.

Every price was verified on CSI's live store on 29 September 2026, with stock checked per size: the Eco C1 10-pack is out of stock on that date and flagged where it appears. Jar dimensions, capacities and heat wording are quoted from the listings, none of which states an inside diameter, wall or base.

The lot A and lot B measurements, weights, fills, sample size and trigger thresholds are our worked example or judgement; the water figures are cylinder geometry on the mean diameter, an approximation; the wax-to-water ratio is a commonly cited rule of thumb, and CSI publishes no wick-performance data. For bulk pricing, GST invoicing, and MSDS and IFRA documentation on request, message us on WhatsApp at +91 7397976926.

Frequently asked questions

Do I need to retest my wick if my jar supplier changes the glass?
Measure first. If the inside, base, shape and fill are inside your approval lot's spread, no. If the pool area moves more than about 15% at any height, the base by more than about 2 mm, or your fill no longer fits, treat it as a new system and re-bracket.
How do I measure the inside diameter of a candle jar at the bottom?
Curl a strip of card inside the jar about 1 cm above the floor, mark where it overlaps, flatten it and divide the length by 3.14. Do the same at mid-height and compare with the rim.
Why is my new batch of candle jars heavier?
If the outside is unchanged, thicker walls or a thicker base are the usual reason, and either one leaves less room inside. Weigh water to your fill line to see how much less, then measure the inside at three heights.
How many jars should I measure from each delivery?
We suggest five from at least two cartons for a small brand, more for the first lots from a new supplier or if the five disagree. Keep a few empty jars from your approval lot as a reference.
Can a thicker jar base change how my candle burns?
It can. A thicker base lifts the wick tab and the last centimetre of wax, and thick glass bases are commonly linked to different heat behaviour near the end of a burn. Watch the final third in a full-life test, never judging glass heat by touch.
Do CSI jar listings state the internal diameter?
No CSI container listing states an internal diameter, wall or base thickness. Treat listed figures as outside or unspecified and measure each lot yourself.
Before you pour the new lot
Ten minutes with a ruler, a card strip and a scale decides whether you need a new bracket.
Sample five jars from two cartons, measure the inside at three heights plus wall, base, empty weight and water to your fill line, and compare with your approval lot against the trigger rule. Send us the sheet on WhatsApp if you want a second pair of eyes.
Shop the Weighing Scale Send your lot sheet
Continue the read — jar changes and the wick matrix
Editorial standards & sources
About this guide: part of CSI's commercial wick-matrix cluster (4281–4300): an incoming-lot measurement sheet for jars whose inside changed while the outside held, a worked lot A versus lot B comparison with declared geometry, a written trigger rule (same, changed or new candle system) and the costed new-system bracket.

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 — Black Glass Jar with Black Lid (150 gram) (Deliveries Starting 5th Dec), Black Matte Glass Jar, Clear Glass Jar with Golden Lid (150 gram), Luxury Soy Wax CSI 464 (Flakes Form) For Container Candles, Tin Containers for Candle Making - 85 & 135g, White Matte Glass Jar. They are general product reviews, not assessments of the wick advice on this page. Names, star ratings, dates and products are as recorded by Judge.me and wording is unedited. "Verified buyer" appears only on reviews Judge.me recorded as verified — Jinal Monil, Soumili Gope, Biny Abraham, Tina Lynette Lazaro Moganti, Thenirvaofficial. The reviews from Ashwini are published but not recorded as verified, and carry no badge. Reviews below five stars are included as published, not filtered out.

Figures verified 29 September 2026, CSI live pricing: Shot Glass Jar (Pack of 6) 130gram ₹288.00 (title says 6, description says five: ₹48.00 or ₹57.60 a jar); Candle Making Weighing Scale ₹354.00; Eco Candle Wicks Thin (C1) 10 ₹59.00 (out of stock), 20 ₹118.00; Thick (C2) 10 ₹94.40, 20 ₹188.80; Black Shiny Glass Jar with Golden Lid pack of 1 ₹47.20, pack of 5 ₹236.00; Citrus Lemon Fragrance Oil 100 g ₹300.00; Luxury Soy Wax CSI 464 1 kg ₹507.40. Every other size named is in stock on 29 September 2026. Per unit = price ÷ jars, wicks or grams, two decimals.

Non-price figures: lot A and lot B dimensions, weights and the 12 mm fill line are worked-example measurements; pool area = π r² on the inside radius; water to the fill line is cylinder geometry on the mean of the rim and near-base diameters (approximate); wax ≈ 0.86–0.9 × water is a commonly cited rule of thumb. Load is a percentage of total candle weight (125 g at 8% = 10 g oil + 115 g wax; 100 g = 8 g + 92 g). The sampling plan and trigger thresholds are judgement. CSI 464 up to 10%, pour 80–90°C. Costs exclude labour, freight, packaging and GST. Net-quantity labelling: check current Legal Metrology requirements; not legal advice. Diwali 8 November 2026 is a calendar fact.
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