What size 00 actually is

Capsule sizes descend 000, 00, 0, 1… Size 00 holds ~0.95 mL — large enough for high-dose nutraceuticals, veterinary and bulk mineral blends, but smaller than 000. Its body length (~23.5 mm) and cap band demand a maker whose separator and closing jaws are sized for 00; generic "all-size" manual trays often seat 00 loosely and leak powder at the joint.

The maker categories

• Manual desktop maker: hand-loaded trays, manual closing. Cheapest, slowest, good for R&D and pharmacy use.

• Semi-auto bench filler: mechanical dosing (disk or tamping) with manual capsule loading; mid throughput.

• Combined fill-and-close bench: automates both filling and locking in one station; higher accuracy, still bench-scale.

Shell handling for 00

Size 00 shells separate and orient like smaller sizes but need a slightly higher vacuum for the cap and a firmer closing stroke. Moisture matters: in the Gulf and coastal Southeast Asia, 00 gelatin absorbs humidity and the cap can stick to the body before locking — a dehumidified bench or dessicant pack in the hopper helps.

Measured throughput and accuracy

Compliance for 00 makers

Require CE (Machinery Directive 2006/42/EC), ISO 9001, and EU GMP / FDA 21 CFR 211 readiness for commercial output; ISO 13485 if device-linked. Even a bench maker must show material certificates (316L, Ra ≤ 0.8 µm) and a cleanable design — auditors do not relax the rule for small equipment.

Real cases (anonymized)

• Southeast Asia nutraceutical: 800 mg mineral in 00, semi-auto bench at 12,000 caps/hr, EU GMP export, RSD 3.8% after a tamping upgrade from a disk.

• Middle East veterinary pharmacy: manual desktop maker for 00 antibiotic, ~2,500 caps/hr; humidity controlled with a bench dessicant box.

• EU startup: fill-and-close bench for 00 probiotic, 14,000 caps/hr, full IQ/OQ for EU GMP.

Pain points

• Loose seating on generic trays sized for 00 — powder leaks at the joint.

• Cap sticking in humid climates before locking.

• Accuracy drift on manual makers past a few thousand capsules.

Misconceptions

• "Any capsule maker takes 00." Only those with a true 00 separator and closing jaw.

• "Manual is fine for commercial scale." Accuracy and throughput cap out fast.

• "00 is the same as 000." 00 is 0.95 mL; 000 is 1.37 mL — different tooling.

Maker differences

Procurement pitfalls

• Assuming "all-size" includes a proper 00 seat — verify the separator.

• No RSD acceptance limit in the quote for the bench maker.

• Ignoring humidity control for Gulf/SEA plants.

FAQ

What is the volume of size 00?

About 0.95 mL body capacity — between 000 (1.37 mL) and size 0 (0.68 mL).

Which maker for 00 commercial use?

A semi-auto or fill-and-close bench; manual is for R&D and pharmacy scale.

Is a 00 maker GMP-compliant?

Yes, with CE, ISO 9001, validated dosing and cleanability evidence.

Why does my 00 cap stick before locking?

Humidity softens the gelatin; use a dehumidified bench or dessicant.

How accurate is a manual maker?

Typically 4–7% RSD — acceptable for R&D, not for tight commercial specs.

Does 00 need different tooling than 0?

Yes — separator, dosing parts and closing jaw are size-specific.

Can a 00 maker handle 000 shells?

Only if built for 000; many 00 makers do not seat the larger shell.

What should the SAT measure?

Throughput at 00, fill RSD, and closure integrity — not just "fills 00."