My Jar Supplier Is Temporarily Out of Stock — How Do I Choose an Alternative Container That Requires the Least Formulation Redevelopment?
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What matters most? Pool area at the fill surface and at the base (×3 each in the example rule), then glass thickness (×2), then fill height, headspace and finish (×1).
Does a matching diameter mean a match? No. Illustrative Jar B matches the diameter exactly but scores 13 because it is taller with heavier glass; tapered Jar C matches at mid-height and scores 17.
How big a test? Score 0–6: CONFIRM, six candles (₹1,589.42 in CSI materials). 7–15: REPEAT, nine with a bracket (₹2,201.22). 16+: new system. Bands are an example you set in advance.
Least redevelopment means least geometry change
Your formula — wax, oil, load, cure — does not care which jar it is in. Your wick does, because the wick was approved for a particular pool size, depth and glass. So the question "which container needs the least redevelopment?" is really "which container is geometrically closest to the one my wick was approved in?" That can be answered before you pour a single candle, with a caliper, a depth gauge and a scale. This page gives you the measurement sheet, the arithmetic that turns it into pool areas and fill heights, and an example scoring rule that ranks candidates and tells you how big a test each one needs.
Everything below uses illustrative measurements: your approved jar is a straight 7.6 cm inside, 8 cm deep, 6 mm base, 3 mm wall, clear glass, holding 200 g. Four candidates, A to D, are what a supplier might offer when yours is out of stock. None of the figures is a CSI jar's specification. Replace them with your own measurements and the method works the same.
The comparison sheet
Measure three jars of each candidate and use the average; note the range. Inside diameters at the rim, mid-height and base come from a caliper's inside jaws; internal height from a depth gauge; base thickness as outside height minus internal depth; wall thickness as (outside − inside) ÷ 2 at the fill line. The derived rows are geometry: brim volume as a frustum (π × h ÷ 12 × (D² + D·d + d²), which is a plain cylinder when the diameters match), fill height for 200 g at a labelled 0.88 g/ml, and pool areas as π × d² ÷ 4.
| Measurement | Approved | Jar A | Jar B | Jar C | Jar D |
|---|---|---|---|---|---|
| Inside diameter at rim | 7.6 cm | 7.7 cm | 7.6 cm | 8.4 cm | 7.2 cm |
| Inside diameter at mid-height | 7.6 cm | 7.7 cm | 7.6 cm | 7.6 cm | 7.2 cm |
| Inside diameter at base | 7.6 cm | 7.7 cm | 7.6 cm | 6.8 cm | 7.2 cm |
| Internal height | 8.0 cm | 8.0 cm | 9.5 cm | 8.0 cm | 8.5 cm |
| Base thickness | 6 mm | 6 mm | 10 mm | 6 mm | 8 mm |
| Wall thickness | 3 mm | 3 mm | 5 mm | 3 mm | 4 mm |
| Finish | clear | clear | clear | clear | frosted |
| Brim volume (calculated) | 363 ml | 373 ml | 431 ml | 364 ml | 346 ml |
| Brim capacity at 0.88 g/ml | 319 g | 328 g | 379 g | 321 g | 305 g |
| Fill height for 200 g | 5.01 cm | 4.88 cm | 5.01 cm | 5.37 cm | 5.58 cm |
| Pool diameter at fill surface | 7.60 cm | 7.70 cm | 7.60 cm | 7.87 cm | 7.20 cm |
| Pool area at fill surface | 45.36 cm² | 46.57 cm² | 45.36 cm² | 48.69 cm² | 40.72 cm² |
| Pool area at base | 45.36 cm² | 46.57 cm² | 45.36 cm² | 36.32 cm² | 40.72 cm² |
| Headspace above 200 g | 2.99 cm | 3.12 cm | 4.49 cm | 2.63 cm | 2.92 cm |
Read across and each candidate's character jumps out. Jar A is a slightly wider straight jar — the classic "near enough". Jar B has exactly the approved inside diameter but is taller, with a heavier base and thicker walls. Jar C matches at mid-height but tapers from 8.4 cm to 6.8 cm, so its pool at the base is 20% smaller than the approved jar's. Jar D is narrower, heavier and frosted. Which is "closest" depends on what you weight, which is what the scoring rule is for.
The substitution scoring rule
The rule below is an example, not a standard. It converts each measured difference into 0–3 points with fixed bands, multiplies by a weight that reflects how directly that dimension affects the wick, and adds them up. Change the bands and weights to suit your products — but set them before you measure the candidates, so the rule cannot be bent toward the jar you already like.
| Line | 0 points | 1 point | 2 points | 3 points | Weight |
|---|---|---|---|---|---|
| Pool area at fill surface (% vs approved) | ≤ 2% | ≤ 5% | ≤ 10% | > 10% | ×3 |
| Pool area at base (% vs approved) | ≤ 2% | ≤ 5% | ≤ 10% | > 10% | ×3 |
| Fill height for your fill weight (mm) | ≤ 2 | ≤ 5 | ≤ 10 | > 10 | ×1 |
| Headspace above the fill (mm) | ≤ 2 | ≤ 5 | ≤ 10 | > 10 | ×1 |
| Wall thickness (mm difference) | 0 | ≤ 1 | ≤ 2 | > 2 | ×2 |
| Base thickness (mm difference) | 0 | ≤ 1 | ≤ 2 | > 2 | ×2 |
| Finish or glass type changed | no | — | yes | — | ×1 |
| Line | Jar A | Jar B | Jar C | Jar D |
|---|---|---|---|---|
| Pool area at fill surface (×3) | 1 → 3 | 0 → 0 | 2 → 6 | 3 → 9 |
| Pool area at base (×3) | 1 → 3 | 0 → 0 | 3 → 9 | 3 → 9 |
| Fill height for 200 g (×1) | 0 → 0 | 0 → 0 | 1 → 1 | 2 → 2 |
| Headspace (×1) | 0 → 0 | 3 → 3 | 1 → 1 | 0 → 0 |
| Wall thickness (×2) | 0 → 0 | 2 → 4 | 0 → 0 | 1 → 2 |
| Base thickness (×2) | 0 → 0 | 3 → 6 | 0 → 0 | 2 → 4 |
| Finish / material (×1) | 0 → 0 | 0 → 0 | 0 → 0 | 2 → 2 |
| Total (max 38) | 6 | 13 | 17 | 28 |
| Test plan | CONFIRM · 6 candles | REPEAT · 9 candles, full life | NEW SYSTEM · full wick series | NEW SYSTEM · full wick series |
On this rule, Jar A scores lowest (6 of 38) and is the least redevelopment; Jar D scores highest (28). Two results are worth noticing. Jar B has a perfect diameter match and still does not win, because thicker walls, a heavier base and a deeper jar each change the late burns — see thicker glass, thicker base and taller jars. And Jar C, the taper, matches at mid-height, which is what a quick measurement across the middle would have told you, yet its base pool is far off — the narrowing-jar post explains why that matters most.
| Score | Verdict | Test plan | CSI materials (CSI 464 + Lavender) |
|---|---|---|---|
| 0–6 | CONFIRM | 6 candles: 3 approved jar, 3 candidate; one of each to full life | ₹1,589.42 |
| 7–15 | REPEAT | 9 candles with a bracket wick; every set to full life | ₹2,201.22 |
| 16 or more | NEW SYSTEM | Full wick series; treat as a new product | quote on WhatsApp |
What each verdict keeps and repeats
The verdicts map onto the series' retest vocabulary — KEEP, CONFIRM, REPEAT, NEW. In every case your formula tests stay; only the wick-and-jar lines move.
| Test | CONFIRM (0–6) | REPEAT (7–15) | NEW SYSTEM (16+) |
|---|---|---|---|
| Oil–wax compatibility, cure, cold throw | KEEP | KEEP | KEEP |
| Full melt pool, tunnel ring | CONFIRM | REPEAT | REPEAT with wick series |
| Flame, mushrooming, soot | CONFIRM | REPEAT | REPEAT with wick series |
| Jar-side readings | CONFIRM | REPEAT | REPEAT with wick series |
| Hot throw | CONFIRM | CONFIRM | REPEAT |
| Full-life burn | 1 per set | every set | every candidate wick |
| Bracket wick | not poured | poured from start | full series |
| Label weight / burn time | CONFIRM | NEW calculation | NEW |
From out-of-stock to approved: the sequence
The priced test kits
Built from listed, in-stock CSI sizes on the 24 September 2026 pull, with Luxury Soy Wax CSI 464 (rated up to 10%; CSI's melt/pour guidance 80–90°C, confirm on the product page) and Lavender as the worked example, 8% load, 5% allowance.
| Item | CONFIRM · 6 candles | REPEAT · 9 candles |
|---|---|---|
| Luxury Soy Wax CSI 464 | 1,159.2 g · 1 × 1 kg + 1 × 500 g · ₹767.40 | 1,738.8 g · 2 × 1 kg · ₹1,014.80 |
| Lavender Fragrance Oil | 100.8 g · 1 × 100 g + 1 × 15 g · ₹645.02 | 151.2 g · 1 × 100 g + 1 × 50 g + 1 × 15 g · ₹915.02 |
| Eco Candle Wicks | Thin C1 × 10 · ₹59.00 | Thin C1 × 10 + Thick C2 × 10 · ₹153.40 |
| Wick Centering Device | 1 × 5 · ₹118.00 | 1 × 5 · ₹118.00 |
| CSI materials total | ₹1,589.42 | ₹2,201.22 |
| Candidate sample jars (example) | 3 × ₹60.00 = example ₹180.00 | 3 × ₹60.00 = example ₹180.00 |
| Pack | Price | Per kg |
|---|---|---|
| 500 g | ₹260.00 | ₹520.00 |
| 1 kg | ₹507.40 | ₹507.40 |
| 5 kg | ₹2,537.00 | ₹507.40 |
| 10 kg | ₹5,074.00 | ₹507.40 |
| Pack | Price | Per gram |
|---|---|---|
| 15 g | ₹105.02 | ₹7.00 |
| 50 g | ₹270.00 | ₹5.40 |
| 100 g | ₹540.00 | ₹5.40 |
| 500 g | ₹2,620.00 | ₹5.24 |
| 1 kg | ₹5,221.00 | ₹5.22 |
Decision rule
Scoring ranks candidates; it does not approve them. Approval still comes from the burn test: no worse than the approved jar on every safety line, within your jar supplier's guidance and the fire-safety standard you work to (ASTM F2417 is a commonly cited US one). CSI publishes no numeric flame or jar-temperature limit.
| Result | Decision | Action |
|---|---|---|
| Top-ranked candidate passes its test | APPROVE | Record as approved alternative; keep the approved jar as first choice |
| Top candidate fails a safety line | NEXT | Move to the second-ranked candidate; do not re-wick the first under time pressure |
| Every candidate scores 16+ | WAIT or REDEVELOP | Compare the delay against a full wick series — see the 5,000-candle decision post |
| Candidate passes but the lot varies | CONDITIONAL | Approve with incoming measurement checks on every delivery |
An approved alternative is most valuable before you need it. The backup-supplier post argues for pre-qualifying jars this way in quiet months, the approved-supplier list post shows how to write the result down so purchasing cannot swap jars on its own, and the substitution-or-wait post weighs a substitute against partial production or waiting when an order is already promised.
When the order is already promised
This page is about choosing among candidates. If you already have one substitute in hand and a fixed number of candles due, the question becomes whether that one jar is practical in the time you have, and what it does to your material quantities — the 1,000-candle post works that case, including sampling the jar lot and pricing the extra wax. For the geometry behind every score line, start at the diameter hub.
CANDLEMAKINGSUPPLIESINDIA lists jars and still does not recommend them as substitutes by default. Our White Matte, Salsa and Yankee jars have no published dimensions or fills, so this page tells you to measure them on the same sheet as any other candidate and to choose one only if it scores closest.
Wax and oil prices are CSI live pricing, pulled on 24 September 2026; wick, jar and tool prices are those verified for Blog 760 on 10 September 2026, rechecked 25 September 2026. The candidate measurements are illustrations; brim volumes, capacities, fill heights, pool areas and headspace are plain geometry, and the scores are arithmetic on an example rule.
The scoring bands, weights and score-to-test bands are examples for you to set before measuring. The 200 g fill, 8% load, 0.88 g/ml wax factor, 5% allowance, candle counts, 3–4 hour cycles, 7-day cure and ₹60.00 sample-jar figure are labelled assumptions. CSI publishes no jar dimensions, wick charts or safety limits. WhatsApp +91 7397976926 for help, GST invoicing, MSDS or IFRA documentation.
Frequently asked questions
- My Jar Supplier Changed the Internal Diameter from 7.6 cm to 7.9 cm — Is That Difference Large Enough to Require New Wick Testing?
- My Replacement Jar Has the Same External Diameter but Thicker Glass and a Smaller Internal Diameter — Should I Treat It as a New Candle System?
- My New Jar Has a Much Thicker Base — Should I Repeat End-Of-Life Burn Testing Even If the Upper Dimensions Are Unchanged?
- My New Jar Is Taller but the Diameter Is Identical — Do I Need a Complete Burn Test or Mainly Later-Stage Heat Testing?
- My New Jar Narrows Toward the Bottom — Could a Wick That Is Correct at the Top Become Too Powerful Later?
- I Have 1,000 Candles Due but Can Only Source a Slightly Different Jar — What Measurements Should I Compare Before Deciding Whether the Substitution Is Practical?
- How Do I Create an Approved-Supplier List for Wax, Fragrance, Wicks and Jars so Purchasing Does Not Accidentally Change My Candle Formulation?
- Should I Pre-Qualify Backup Wax, Fragrance, Wick and Jar Suppliers Before I Actually Need Them for Emergency Production?
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 pulled 24 September 2026, CSI live pricing: Luxury Soy Wax CSI 464 ₹260.00 / 500 g, ₹507.40 / 1 kg, ₹2,537.00 / 5 kg, ₹5,074.00 / 10 kg (rated up to 10%; CSI guidance 80–90°C). Lavender Fragrance Oil ₹105.02 / 15 g, ₹270.00 / 50 g, ₹540.00 / 100 g, ₹2,620.00 / 500 g, ₹5,221.00 / 1 kg. Figures verified 10 September 2026 (Blog 760), wick packs rechecked 25 September 2026: Eco Candle Wicks Thin C1 ₹59.00 / 10, Thick C2 ₹94.40 / 10; Wick Centering Device ₹118.00 / 5; White Matte Glass Jar ₹354.00 / 5; Salsa 200 ml ₹200.60 / 5; Yankee 130 ml ₹47.20 each; Mini Glass Jars from ₹129.80 / 5.
Non-price figures and assumptions: All jar measurements (approved and candidates A–D) are illustrative. Area = π × d² ÷ 4; brim volume = π × h ÷ 12 × (D² + D·d + d²); fill heights solved for 200 g at 0.88 g/ml (labelled approximation); headspace = internal height − fill height. The scoring bands, weights, score bands, 8% load, 5% allowance, candle counts, 3–4 hour cycles, 7-day cure and ₹60.00 sample-jar price are examples or working practices. CSI publishes no jar dimensions or safety limits. Diwali 2026 falls on 8 November.