Concentrate Container Sizes: 5ml vs 7ml vs 9ml and What Actually Fits (2026 Guide)

Quick Answer

Quick answer: A 5ml concentrate jar holds about 1 gram, a 6ml holds slightly more than 1 gram, a 7ml holds 1 to 2 grams, and a 9ml holds 2 to 3 grams. Milliliters measure volume, not weight, so density and consistency shift the real number by up to half a gram in either direction.

Cannabis concentrates (including wax, shatter, rosin, live resin, and crumble) are highly potent cannabis products created by extracting cannabinoids and terpenes from flower, used by experienced consumers for their intense effects and rich flavor profiles.

Every week someone orders a case of 5ml jars, opens the box, and realizes they needed 9ml. It is the single most common packaging mistake I see, and it happens because jar listings are labeled in milliliters while everyone thinks in grams.

Those two numbers are not the same thing. A milliliter is volume. A gram is weight. Concentrate density runs anywhere from roughly 0.9 to 1.1 grams per cubic centimeter depending on whether you are packaging shatter, badder, sugar, or live resin, and a fluffy whipped badder can occupy 30 percent more space than the same weight of stable shatter. That gap is where the ordering mistakes live.

This guide covers what each size actually holds, how to match a size to your workflow, and how the price per jar changes when you buy in volume. All the capacity figures and prices below come from our own catalog specs, not from rounded estimates.

Concentrate Container Sizes at a Glance

Four sizes cover almost every concentrate use case. Here is the short version before the detail.

Size	Concentrate capacity	Lid options	Best fit
5ml	About 1 gram	Screw top or child-resistant	Single-gram retail portions, personal stash
6ml	Slightly more than 1 gram	Silicone lid, non-CR	Samples, retail testers, small batch
7ml	1 to 2 grams	Screw top or child-resistant UV	Personal use, extractor samples, low-profile storage
9ml	2 to 3 grams	Child-resistant certified	Premium multi-gram batches, regulated markets

The 5ml jar is the industry standard single gram

If you have ever bought a gram of wax from a dispensary, it almost certainly came in a 5ml jar. The size became the default because a gram of most concentrates fills it with a small amount of headspace left over, which is exactly what you want. Zero headspace means product smearing on the lid threads every time you open it.

The 5ml also carries recognition value. Consumers know the shape. Budtenders know how to price it. Your labels fit without redesign. When we sized our own 5ml heavy-bottom child-resistant jar, matching that established footprint mattered more than squeezing out extra volume.

One caution. If you package badder, whipped rosin, or anything aerated, a gram will look like it is overflowing a 5ml. It is not overflowing. It is just occupying more volume at the same weight. Weigh, do not eyeball.

The 6ml jar holds just over a gram without a child-resistant lid

The 6ml sits in a narrow but useful niche. It holds slightly more than 1 gram, and our version uses a food-grade silicone lid rather than a child-resistant mechanism.

That non-CR design is the point. Retail testers, sample programs, and jurisdictions with flexible packaging rules all benefit from a lid a customer can open with one hand while holding a dab tool in the other. We tested dozens of lid materials before settling on silicone for this one. It will not crack, and it holds its seal through temperature swings that make rigid plastic lids go loose.

Where the 6ml does not belong is any household with kids or any regulated market that mandates child-resistant packaging. Check your state rules before you order a case.

The 7ml jar covers one to two grams and stays low profile

The 7ml is the size I recommend most often to people who are not packaging for retail. It handles 1 to 2 grams depending on density, which means it works for a single large purchase or two smaller ones consolidated.

Our 7ml uses a low-profile heavy-bottom design, and both halves of that description do work. Low profile means it does not tip over on a crowded dab station. Heavy bottom means thicker glass at the base, so the jar survives being knocked off a table onto tile. We have knocked these around on purpose during testing. They dent the floor before they shatter.

The tradeoff is that our standard 7ml screw top is not child-resistant. If you need CR at this size, the 7ml UV-resistant version has child-resistant black lids and tinted glass.

The 9ml jar is for premium two to three gram batches

Nine milliliters holds 2 to 3 grams. It exists because extractors kept asking for something between a single-gram jar and a bulk flower container, and nothing on the market fit.

This is the size that shows up on high-end shelf product. Two-gram and three-gram premium concentrate presentations, direct-to-consumer bulk, and anything where the jar itself is part of the brand impression. Our 9ml lids are child-resistant certified, which matters if you are selling into regulated markets where CR is not optional.

It is also the size people underbuy. If your best-selling SKU is a two-gram badder, a case of 5ml jars does you no good at all.

Why Milliliters Do Not Translate Cleanly to Grams

This is the part that trips up first-time buyers, and it is worth understanding before you place an order.

Density changes the answer by half a gram

Shatter and stable rosin sit at roughly 1.0 to 1.1 grams per cubic centimeter. They pour or press into a jar and fill it efficiently, so a 7ml jar takes closer to the top of its 1 to 2 gram range.

Whipped badder, butter, and live resin trap air during processing. Same weight, more volume. That is why our 7ml listing says 1 to 2 grams rather than a single number. Full-spectrum and live resin products consistently sit at the lower end of a jar's stated gram range, and stable extracts sit at the higher end.

Sugar and diamonds behave differently again. Crystalline structures leave gaps between particles no matter how you load them, so a sauce or diamonds-and-terps presentation eats volume fast.

Headspace is a feature, not wasted capacity

New buyers sometimes ask why a 5ml jar does not hold 5 grams of anything, or why we do not sell a jar rated to the exact gram. The empty space above the product is doing three jobs.

It gives the lid threads a clean surface to seal against. It gives a dab tool room to enter and exit without dragging product onto the rim. And it accommodates thermal expansion, because concentrate loosens and shifts when a jar warms from a cold room to a warm car.

Fill a jar to the absolute brim and you get a lid that gums up, a seal that fails, and product loss on every single open. Plan on filling to roughly 80 percent.

The stated capacity assumes you will actually use the jar

A jar rated at 1 gram means 1 gram of usable, retrievable product. Not 1 gram crammed in with a spatula. If your workflow involves scraping the last of a batch into containers, the practical capacity is a little under the label. Order accordingly.

Matching Jar Size to What You Are Actually Doing

Capacity is only half the decision. The other half is your volume and your compliance situation.

Personal stash: buy the smallest pack, not the smallest jar

If you are storing your own concentrates, size the jar to your typical purchase, then buy the smallest available pack quantity. Most people who dab regularly land on 7ml as the everyday size, because it swallows a two-gram pickup without a second container.

The mistake here is inverted. People buy the smallest jar (5ml) in the largest pack, because the per-unit price looks better, and then end up with 300 jars that are slightly too small for how they actually buy. A 90-count pack of 7ml jars costs $60.99 and will outlast most personal setups by years.

Small batch and home press output

Home rosin pressers should think in yield per press, not per purchase. If a typical run gives you 3 to 4 grams, a 9ml jar holds the whole run and you skip the split.

If you are pressing to sell at small scale, 7ml is the workhorse. It looks like retail product, it stacks, and the price per unit at 180 count ($106.99, or about $0.59 each) keeps your packaging cost per gram under a dollar.

Dispensary retail portions

Retail is where the size decision becomes a menu decision. One-gram SKUs go in 5ml. Two and three-gram premium SKUs go in 9ml. Sample and tester programs go in 6ml with the non-CR silicone lid, assuming your jurisdiction allows it.

Running all three means three purchase orders, which feels inefficient until the first time you try to sell a three-gram badder in a jar that holds one.

Sample and testing programs

For testers, non-child-resistant is a feature. A customer evaluating concentrate at a counter should not be wrestling a push-and-turn lid. The 6ml with a silicone lid was built for exactly this, and it holds enough product that a tester does not run dry after two customers.

Specs That Matter More Than Volume

Two jars can share a capacity and behave completely differently. Here is what to check.

Heavy bottom versus thin wall

Heavy-bottom construction means thicker glass at the base. It adds weight, it adds a more substantial feel in the hand, and it dramatically changes what happens when a jar hits a hard floor. Thin-wall generic jars shatter. Heavy-bottom jars usually bounce.

For anything that lives on a dab station or ships to a customer, pay for the heavy bottom. For jars that sit in a drawer, thin wall is fine.

Worth reading alongside this: our breakdown of what makes borosilicate dab jars different gets into the glass chemistry.

Screw top versus child-resistant

Screw tops seal well and open easily. Child-resistant lids seal well and require a deliberate two-step motion.

If you sell into a regulated market, CR is usually mandatory and the decision is made for you. If you are storing your own product and there are no kids in the house, a screw top is less frustrating on the fiftieth open. Our child-resistant design integrates the CR function into the lid itself rather than adding a secondary locking ring, which is why they do not loosen up over time the way two-piece mechanisms do.

UV and amber glass for terpene retention

Light degrades terpenes. This is not marketing, it is measurable. We tested terpene profiles in UV-tinted jars against clear glass over three months and the difference showed up in the numbers.

If your product sits under retail display lighting, or if you are holding concentrate for more than a few weeks, tinted glass earns its slightly higher cost. Our 5ml and 7ml UV-resistant jars run about $0.14 to $0.17 more per unit than the clear equivalents. For anything you plan to consume within a couple of weeks in a dark drawer, clear glass is fine.

Silicone lids versus rigid lids

Silicone lids win on three counts. They do not crack. They hold seal integrity through temperature changes that make rigid lids go loose. And they are quieter to open, which sounds trivial until you are packaging at 6am.

They lose on child resistance and on stackability under weight. Pick based on which of those matters to you.

For a fuller comparison of container materials, including PTFE, see our guide to glass, silicone, and PTFE concentrate containers.

Buying in Bulk: The Real Price Per Jar Math

Everyone assumes bigger pack equals better unit price. Mostly true, and the exceptions are worth knowing.

Unit price drops, but not in a straight line

Here is the actual per-unit math from our current 5ml heavy-bottom child-resistant jar tiers:

• 80 count at $57.99 works out to $0.72 each
• 160 count at $101.99 works out to $0.64 each
• 320 count at $179.99 works out to $0.56 each
• 400 count at $265.00 works out to $0.66 each

Read that last line again. The 400 count is more expensive per jar than the 320 count. Larger tiers sometimes carry different case configurations, and the curve is not always monotonic. Always divide before you order.

The 7ml low-profile tiers behave more predictably: $0.68 each at 90 count, $0.59 at 180, $0.52 at 450, and $0.46 at 900. That is a 32 percent per-unit reduction from the smallest tier to the largest.

The tier that is usually the best value

For most buyers the second or third tier is the sweet spot. You capture most of the volume discount without tying up cash in inventory you will not touch for a year.

Concrete example. On the 7ml, jumping from 90 count to 180 count saves you $0.08 per jar and costs $46 more up front. Jumping from 450 to 900 saves $0.06 per jar and costs $179 more. The first jump is easy. The second only makes sense if you are moving real volume.

How many to order the first time

Order one tier up from what you think you need. Packaging demand runs ahead of forecasts more often than behind them, and running out of jars mid-batch is worse than having a spare case on a shelf. Glass jars do not expire.

If you are ordering for the first time and genuinely do not know your volume, start at the smallest tier, track how fast you go through it, and size the reorder from real data instead of a guess.

Orders over $50 ship free within the US, which most bulk tiers clear on their own.

Flower Jars Use a Completely Different Sizing System

If you are also storing flower, be aware that those jars are labeled in ounces of volume, not milliliters, and the numbers do not translate intuitively.

Ounce labels describe volume, not the weight they hold

A 10oz jar does not hold 10 ounces of flower. It holds roughly 14 grams, or a half ounce by weight. An 18oz jar holds about 28 grams, a full ounce. The ounce figure on the label is the container's fluid volume.

The ratio works out to roughly 20ml of jar volume per gram of flower, because flower is bulky and light. Concentrate is dense and compact, which is why concentrate jars are measured in single-digit milliliters and flower jars are measured in hundreds.

Common flower sizes and what they actually hold

A 3oz jar suits an eighth with room to spare, and at $29.99 for a 50 count it runs $0.60 per jar. The 10oz covers a half ounce. The 18oz covers a full ounce. All three come with black child-resistant caps.

If you are storing flower long term, humidity control matters more than jar size. Our guide to nailing the 58 versus 62 percent humidity question covers that in detail. Browse the full range in storage containers.

Sizing Mistakes Worth Avoiding

Buying one size for everything

The most expensive packaging mistake is standardizing on a single size before you know your product mix. If you sell one-gram and three-gram SKUs, you need two jar sizes. There is no clever way around it.

Ignoring lid compliance until the order arrives

Child-resistant requirements vary by state and they are not negotiable in regulated markets. Confirm your requirement before ordering, because a case of non-CR jars is useless to a licensed operation and non-returnable once opened.

Overbuying the smallest tier because the unit price looked good

A $0.29 jar you never use costs more than a $0.68 jar you use next week. Unit price only matters if the units get used.

Filling to the brim

Covered above but worth repeating, because it is the mistake that costs product rather than money. Fill to about 80 percent. Your lids and your yield will both thank you.

Quick Reference

• Storing 1 gram: 5ml
• Storing just over 1 gram, no CR needed: 6ml
• Storing 1 to 2 grams: 7ml
• Storing 2 to 3 grams: 9ml
• Storing an eighth of flower: 3oz
• Storing a half ounce of flower: 10oz
• Storing a full ounce of flower: 18oz

Concentrate longevity depends on more than the jar. If you are holding product through summer, our guide on storing dabs in summer heat covers whether the fridge is actually helping. For odor questions, do dabs smell has the honest answer.

Ready to order? The full lineup of sizes and lid styles lives in concentrate jars, and loading tools are in dab tools.