How Much Wax Should I Add as Production Allowance When Calculating a 500-Candle Batch to Account for Melter, Pitcher and Pouring Losses?
शेयर करना
Should I multiply by 1.05 or divide by 0.95? Divide by 0.95 if the allowance must survive a 5% loss. 105 kg only leaves 99.75 kg, about 498 candles.
Where does most of the allowance go? In the worked example, over half is residue per melt multiplied by the number of melts.
Can I raise the fragrance load to cover losses? No. The allowance is scented wax at the same 8%. Changing the load changes every candle.
Start from the finished order, not from the wax
Five hundred candles of 200 g need 100 kg of scented wax in the jars: 92 kg of wax and 8 kg of oil at 8% of total weight. That is the theoretical figure. It assumes every gram leaves the melter and lands in a saleable jar at exactly 200 g, which never happens at this scale.
The planning convention used across this series is 5% wastage. It is a reasonable place to start, but how you apply it matters more than most people expect. There are two common ways to do it, and they do not give the same answer.
| Method | Scented wax to make | Wax + oil at 8% | Left after 5% is lost | Candles |
|---|---|---|---|---|
| Add 5%: 100 × 1.05 | 105 kg | 96.6 kg + 8.4 kg | 105 × 0.95 = 99.75 kg | about 498 |
| Gross up: 100 ÷ 0.95 | about 105.26 kg | about 96.84 kg + 8.42 kg | 100 kg | 500 |
The difference is only about 263 g, a little over one candle. But on a 500-candle order the missing candle is usually discovered at the end of the last melt, when the only fix is a small extra batch at a different time and temperature. If your allowance is meant to cover losses of 5% of what you make, divide by 0.95 rather than multiplying by 1.05.
Build the allowance from your own losses, not a round number
Five percent is a planning figure, not a measurement. Your real allowance depends on your equipment and how many times you melt. The useful way to think about it is in two parts:
Fixed losses per melt. Every time you fill and empty a melter, you leave a film and a heel behind. Every time you use a pitcher or funnel you leave another film. These losses happen per melt, whatever the batch size. More melts mean more fixed loss.
Proportional losses per candle. Overfill, rejects, spills and retained samples scale with the number of candles. Double the order and they roughly double.
CSI's 10 kg Electric Wax Melter states that it melts 9.5 litres at a time, roughly 8.5 kg of melted soy wax at about 0.9 g per ml. At that fill, 105 kg of scented wax is about 12.4 melts, so plan for 13. Weigh one real fill of your own melter before you rely on that figure. The table below uses residue figures a maker might measure; they are illustrative and are all suggested starting points to replace with your own weighings.
| Component | Basis | Example figure | Total |
|---|---|---|---|
| Melter film and heel | Per melt | 120 g × 13 | 1,560 g |
| Pitcher film | Per melt | 60 g × 13 | 780 g |
| Funnel and nozzles | Per melt | 30 g × 13 | 390 g |
| Overfill | Per candle | 1 g × 500 | 500 g |
| Rejects | Per candle | 1% = 5 candles × 200 g | 1,000 g |
| Retained samples | Per order | 3 candles × 200 g | 600 g |
| Spills | Per order | Estimated | 300 g |
| Total | 5,130 g, about 5.1% of 100 kg |
In this example the built-up figure lands close to 5%, which is reassuring. But notice where it comes from: more than half of it is the per-melt residue multiplied by 13. A maker who pours from a larger vessel, or who melts less often, will have a smaller fixed component. A maker with more pitchers or a slower pouring team may have a larger one. That is why the number has to be yours.
Turn the allowance into a buying list
The allowance is scented wax at the same 8% load, so wax and oil both scale with it. Never add the allowance as wax alone, and never raise the fragrance percentage to 'cover' losses. Both change the formula of every candle in the order.
Using the gross-up figure of about 105.26 kg, you need about 96.84 kg of wax and 8.42 kg of oil. Here is how that looks with CSI 464 and Eucalyptus Spearmint:
| Material | Needed | Buy | Cost | Spare |
|---|---|---|---|---|
| CSI 464 wax | 96.84 kg | 10 × 10 kg packs | 10 × ₹5,074.00 = ₹50,740.00 | 3.16 kg |
| Eucalyptus Spearmint oil, option A | 8.42 kg | 9 × 1 kg | 9 × ₹3,068.00 = ₹27,612.00 | 0.58 kg |
| Eucalyptus Spearmint oil, option B | 8.42 kg | 8 × 1 kg + 1 × 500 g | (8 × ₹3,068.00) + ₹1,652.00 = ₹24,544.00 + ₹1,652.00 = ₹26,196.00 | about 79 g |
Option B looks cheaper, but 79 g of spare oil is thin. Oil left clinging to the weighing jugs across 13 additions can easily consume that. If a single short weighing would force a partial melt at a lower load, option A is the safer purchase. Leftover oil keeps for the next order.
The allowance itself costs real money. The extra 4.84 kg of wax in CSI 464 is about ₹2,455.82 (4.84 × ₹507.40) and the extra 0.421 kg of oil is about ₹1,291.63 (0.421 × ₹3,068.00), roughly ₹3,747.45 in total. Much of that is recoverable if your next order uses the same fragrance, because residue scraped from the melter and pitchers can go into the next batch.
CSI does not list a pack above 10 kg for CSI 464. For larger quantities of wax, request a quote on WhatsApp at +91 7397976926.
Prove the allowance on the first run, then tighten it
The first 500-candle order is the experiment that sets the allowance for every order after it. Record the right things and you will not need to guess again.
Keep the allowance honest over time
Losses change when equipment, people or products change. A new melter, a different jar with a narrower neck or a new team member can shift the figure. Re-measure the allowance on the first order after any of those changes, and write the allowance on the batch sheet with the date it was last validated.
Treat the allowance as a planning tool rather than a target for the team. If people know 5% is 'allowed', spills and overfill tend to grow to fill it. Keep recording the real losses, and let the next allowance reflect what actually happened.
Where this page fits
CSI already has guides that cover parts of this question. This page covers the failure investigation for the question above; these go deeper on the rest:
Three things to buy for this job
| Option | Price | Status on the September 2026 pull |
|---|---|---|
| 10 kg capacity | ₹21,240.00 | In stock |
| 20 kg capacity | ₹25,960.00 | In stock |
| Option | Price | Status on the September 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 |
| Option | Price | Status on the September 2026 pull |
|---|---|---|
| 15 g | ₹68.44 | In stock |
| 50 g | ₹212.40 | In stock |
| 100 g | ₹354.00 | In stock |
| 500 g | ₹1,652.00 | In stock |
| 1 kg | ₹3,068.00 | In stock |
CANDLEMAKINGSUPPLIESINDIA supplies raw materials and production equipment, not finished candles. This guide separates general process physics from what CSI's own product pages state, and labels every mixing time, temperature window, hold limit, loss allowance or sample count as a starting point for your own validation.
Prices are live CSI prices from September 2026; product pages are authoritative. Where a spec is not published — such as the scale's capacity or the thermometer's range — this guide says so rather than filling the gap.
For bulk quotes, GST invoicing, IFRA and MSDS documents, message us on WhatsApp at +91 7397976926.
Frequently asked questions
- My Fragrance Container Still Has Significant Oil Coating the Walls After I Pour It Into the Melter — Should Transfer Loss Be Included in Commercial Formulation Calculations?
- My Small Test Batch Uses a Spatula to Scrape Every Gram of Fragrance Into the Wax but Bulk Production Leaves More Material Behind — Can Transfer Loss Alter the Effective Fragrance Load?
- I’m Using Multiple Pouring Pitchers and Each Retains Some Wax — How Do I Calculate Realistic Production Yield Instead of Theoretical Yield?
- My Team Is Filling 200 g Candles but Actual Finished Weights Range From 192 g to 208 g — How Much Can Fill Variation Affect Customer Consistency and Production Costing?
- My Candle Fill Weight Is Correct While Hot but Differs After Cooling — Which Measurement Should My Production QC Standardise?
- I’m Producing 1,000 Candles and Small Weighing Errors Become Kilograms of Material — How Do I Establish Scale Checks Before Each Production Run?
- Should I Use Calibration Weights to Check Production Scales Before Making Large Candle Batches?
- My Two Production Scales Give Slightly Different Readings — How Do I Prevent Different Employees From Creating Different Formulations?
- I Need to Produce 500 Candles in Seven Days — How Do I Calculate Whether My Current Melting Equipment, Moulds and Workspace Can Handle the Production Volume?
- I Received an Order for 1,000 Candles — How Do I Calculate Raw Materials, Wastage, Production Time and My Final Quotation?
Customer reviews: The reviews at the top are genuine, published Judge.me reviews — Raajull Bhatt (5★, verified); Arminder Kaur (4★, verified); Manasa GN (5★, verified); Lalitha Jagan (5★, not recorded as verified); Sraddha (5★, verified); Urvashi Patel (4★, verified). Names, ratings, dates and products as recorded by Judge.me.
Product facts (September 2026, CSI live store): Electric Wax Melter (Imported): 10 kg capacity ₹21,240.00, 20 kg capacity ₹25,960.00 — stated 9.5 litres per melt · display 60–100°C with a stated ±10°C deviation · stated 10 kg of soy in about 30 minutes at 100°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). Eucalyptus Spearmint Fragrance Oil: 15 g ₹68.44, 50 g ₹212.40, 100 g ₹354.00, 500 g ₹1,652.00, 1 kg ₹3,068.00 — flashpoint 199°C · 0% vanillin · up to 10% soy, up to 6% paraffin · rated "moderate to strong".
Assumptions: Fragrance load is a percentage of total candle weight (200 g = 184 g wax + 16 g oil at 8%; a 25 kg batch at 8% = 23 kg wax + 2 kg oil). Melted soy wax is taken as roughly 0.9 g per ml for volume conversions, so the melter's stated 9.5 litres is about 8.5 kg — weigh one real fill. Mixing times, temperature windows, hold limits, loss allowances and sample counts are suggested starting points to validate, not measured CSI data. Example logs and readings are illustrations. Prices and availability change — product pages are authoritative.