My New Fragrance Oil Lot Smells Slightly Different From the Previous Lot — Should I Make Test Candles Before Releasing It to Production?
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How many confirmation candles do I need? A suggested starting point is three per lot, made in one session from the same melted wax, so one odd candle does not decide the outcome.
Can I just raise the load if the new lot is weaker? Not without retesting. A load change can alter wick behaviour and sweating; treat it as a new formulation with its own wick test.
What if the lots are clearly different? Keep the new lot in quarantine and contact the supplier with lot numbers and notes. For CSI oils, ask on WhatsApp and get guidance in writing.
Yes — a slight difference in the bottle is exactly when candles earn their cost
Fragrance oils are blends of many materials, and natural variation between production lots is normal. So is variation in how you perceive them: the previous lot has been open for weeks, your nose knows it intimately, and the new one is unfamiliar. None of that tells you whether the new lot will behave differently in your wax, with your wick, in your jar. That is a candle question, and it has a cheap candle answer.
Make a small set of confirmation candles before releasing the new lot to production. If the candles from the new lot and the previous lot cannot be told apart once cured — cold throw, hot throw, colour and burn — release it. If they can be told apart, you have found out on six candles rather than on a production run.
The confirmation test, set up so the only variable is the lot
The worked example uses Bergamot Amber, which the reader pours into CSI's 150 g clear apothecary jar with golden lid. A 150 g candle at 8% carries 12 g of oil and 138 g of wax. The previous lot (call it lot A) is available as a retained sample; the new delivery is lot B. Everything else must match your production standard exactly: same wax and wax lot, same wick, same jar, same load, same pour and add temperatures, same cure.
What six candles cost compared with what they protect
Using CSI 464 at ₹5,074.00 per 10 kg (₹0.5074 per g), the 150 g jar at ₹944.00 per pack of 10 (₹94.40 each), an Eco C1 wick at ₹5.90, and Bergamot Amber at ₹5,437.00 per kg (₹5.437 per g):
| Line | Working | Cost |
|---|---|---|
| Oil for six candles | 6 × 12 g = 72 g; 72 × ₹5.437 | ₹391.46 |
| Wax for six candles | 6 × 138 g = 828 g; 828 × ₹0.5074 | ₹420.13 |
| Jars | 6 × ₹94.40 | ₹566.40 |
| Wicks | 6 × ₹5.90 | ₹35.40 |
| Test total | ₹391.46 + ₹420.13 + ₹566.40 + ₹35.40 | ₹1,413.39 |
| Oil alone in a 400-candle run (example) | 400 × 12 g = 4,800 g; 4,800 × ₹5.437 | ₹26,097.60 |
The test total excludes packaging, labels, labour, shipping and GST, and three of the six oil portions come from a retained sample you already own, so the true new spend is lower. Even so, the confirmation set costs about one-eighteenth of the oil alone in a 400-candle run — and the 400 is an example; use your own run size. The tested candles are not wasted either: the unburned ones become your retained candles for lot B.
Scoring the result: release, release with a note, or hold
| Attribute | How assessed | Release if | Hold if |
|---|---|---|---|
| Cold throw strength | Blind lid lift, two assessors | Not reliably separated | Lot B consistently picked as weaker or stronger |
| Cold throw character | Words recorded blind | Same descriptors | New descriptors, e.g. sharper, sweeter, flatter |
| Hot throw | Matched supervised burns | Same strength and character in the room | Clear difference agreed by both assessors |
| Burn behaviour | Melt pool, flame, smoke | Matches production standard | Larger flame, soot, tunnelling or flicker not seen with lot A |
| Wax colour | Side by side in daylight | No visible difference | Visible warming or tint |
| Off-notes | Cold and hot | None | Sour, sharp, solvent-like or burnt note |
Three outcomes follow. Release when nothing separates the lots. Release with a note when the only difference is small, describable and judged acceptable — record it, keep the retained candles, and check the next lot more carefully. Hold when hot throw, burn or an off-note differs. In a hold, keep lot B in quarantine and contact the supplier with your lot numbers and observations; for CSI oils that is WhatsApp (+91 7397976926). Ask for the IFRA certificate and MSDS for the lot, and for any storage guidance in writing, since CSI's oil pages publish no shelf life or storage conditions.
Why the bottle and the candle can disagree
A strip shows the oil as it evaporates from paper. A candle shows the oil dissolved in wax, released by a melt pool at a temperature set by your wick and jar. Some differences you smell on a strip vanish in wax; others, especially in the heart and base, only appear once the candle burns. That is why the confirmation step judges the candle, not the bottle.
When one delivery holds more than one lot
If you buy several 1 kg packs at once and they carry different lot numbers, each number is its own question. You do not need six candles per pack of the same lot, but you do need at least a strip comparison per lot number, and confirmation candles for any lot that the strips separate from your reference. Mixing two lots in one melt before either has been confirmed makes any later complaint impossible to trace, so keep them apart until both are released.
It is also why the age of your comparison matters. If lot A's candles have been on a shelf for three months, they are no longer a fresh reference — pour lot A candles fresh from the retained oil wherever possible, so both sets start the cure on the same day.
Finally, keep the decision in writing: lot numbers, dates, assessors, scorecard, outcome. When a customer later says a Bergamot Amber candle smells different from the one they bought last season, that page tells you in minutes whether the lot was checked, what was found, and who released it.
Where this page fits
CSI already has guides that cover parts of this question. This page answers one fragrance-ageing decision; these cover the neighbouring questions:
Three things to buy for this decision
| Option | Price | Status on the October 2026 pull |
|---|---|---|
| 15 g | ₹105.02 | In stock |
| 50 g | ₹280.00 | In stock |
| 100 g | ₹560.00 | In stock |
| 500 g | ₹2,718.00 | In stock |
| 1 kg | ₹5,437.00 | In stock |
| Option | Price | Status on the October 2026 pull |
|---|---|---|
| Pack of 10 | ₹944.00 | In stock |
| Pack of 20 | ₹1,888.00 | In stock |
| Option | Price | Status on the October 2026 pull |
|---|---|---|
| 500 g | ₹260.00 | In stock |
| 1 kg | ₹507.40 | In stock |
| 5 kg | ₹2,537.00 | In stock |
| 10 kg | ₹5,074.00 | In stock |
CANDLEMAKINGSUPPLIESINDIA supplies raw materials and production equipment, not finished candles. This guide separates general fragrance-ageing practice from what CSI's own product pages state, says plainly that CSI's oil pages publish no shelf life, storage temperature or ageing data, treats the 60-month shelf life on the CSI 464 and 468 pages as a wax statement only, and labels every test day, cabinet temperature, candle count, reject rate or lead time as a starting point or the reader's own figure.
Prices are live CSI prices from October 2026; product pages are authoritative. No fragrance-oil pack above 1 kg is listed, so larger quantities are shown as multiples of the 1 kg price; ask for a quote rather than assuming a discount.
For bulk quotes, GST invoicing, IFRA and MSDS documents, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- I’m Buying 1 Kg of a Fragrance After Approving a 100 g Sample — Should I Make a Confirmation Candle Before Using the Bulk Oil in Production?
- How Many Test Candles Should I Make From a New Fragrance Oil Lot When My Monthly Production Exceeds 5,000 Units?
- Should I Validate a New Fragrance Oil in My Highest-Selling Wax and Wick Combination Before Purchasing 25 Kg?
- How Do I Compare Fragrance Suppliers Using Stability, Consistency, Hot Throw, Documentation, Price per Kg and Reorder Reliability?
- Should I Buy 25 Kg of Fragrance Oil at a Lower Price If My Actual Consumption Is Only 2 Kg per Month and Its Remaining Shelf Life Is Limited?
- How Do I Calculate the Maximum Economical Fragrance Oil Purchase Quantity Based on Monthly Usage, Bulk Discount, Storage Risk and Shelf Life?
- How Do I Build a Commercial Fragrance Approval System Covering Sample Purchase → Candle Formulation → Initial Burn Testing → Real-Time Ageing → Heat Exposure → Supplier QC → Bulk Ordering?
- How Do I Take a Candle From Fragrance Fading or Changing After Storage → Identify Wax Versus Fragrance Versus Packaging Causes → Perform Real-Time and Accelerated Stability Tests → Compare Alternative CSI Fragrance Oils → Calculate Inventory Risk → Approve the Formulation → Purchase Commercial Quantities?
- I Want to Buy 10 Kg of Lavender Fragrance Oil for Candle Production — What Shelf-Life and Storage Information Should I Request Before Ordering?
- I Approved a Fragrance Sample Months Ago and the Supplier’s Current Batch Smells Different — Should I Treat the New Material as a Fresh Qualification?
- When Changing Fragrance Oil, What Should I Retest: Percentage, Hot Throw, Cold Throw, Wick Behaviour, Discolouration, Sweating, Storage Stability and Full-Life Combustion?
Customer reviews: The reviews at the top are genuine, published Judge.me reviews — Antara Srinivas Iyer (5★, verified); Dipali Sable (5★, verified); Manasa GN (5★, verified); Tina Lynette Lazaro Moganti (5★, verified); Judy Roy (5★, verified); Akanksha Sharma (5★, verified). Names, ratings, dates and products as recorded by Judge.me.
Product facts (October 2026, CSI live store): Bergamot Amber Fragrance Oil: 15 g ₹105.02, 50 g ₹280.00, 100 g ₹560.00, 500 g ₹2,718.00, 1 kg ₹5,437.00 — top bergamot and citrus, heart amber with soft floral, base woody musk and vanilla · soy 6–10%, paraffin 6–8% · page intensity guide: 6% bergamot leads, 8% balanced, 10% amber comes forward and vanilla/musk base becomes more prominent. Clear Glass Jar with Golden Lid (150 gram): Pack of 10 ₹944.00, Pack of 20 ₹1,888.00 — page: height with lid approx. 8 cm, outer rim approx. 7 cm, base approx. 6.5 cm, 150 g fill, safe for hot pour up to 85°C. Luxury Soy Wax CSI 464 (flakes): 500 g ₹260.00, 1 kg ₹507.40, 5 kg ₹2,537.00, 10 kg ₹5,074.00 — 100% soy container wax in flakes · single pour · stated fragrance load up to 10% · stated shelf life 60 months (cool, dry storage).
Assumptions: Fragrance load is a percentage of total candle weight (200 g = 184 g wax + 16 g oil at 8%). CSI fragrance-oil pages publish no shelf life, storage temperature or ageing data; the 60-month shelf life on the CSI 464 and 468 pages refers to the wax. Accelerated heat or cycling tests compare options and do not predict an exact shelf life. Every test day, temperature, candle count, reject rate, lead time and cost of money is a suggested starting point or the reader's own figure. No fragrance-oil pack above 1 kg is listed; larger quantities are shown at the 1 kg price and quoted on WhatsApp. Fragrance-oil prices re-checked 8 October 2026, wax prices 7 October 2026; product pages are authoritative.