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Millsheet/Industrial gases/Cylinders to bulk tank

Plan a CO2 supply

Say how much you use. See what a month of each way of being supplied means at your site, then send every supplier the same specification.

We use for with , delivered to from . We’d .

20tonnes of CO2 a month

  • 44,092 lb a month
  • 22 US tons
  • 385,421 scf gas 1
  • 1,449 lb a day

At this volume, a bulk tank needs the fewest fills inside your limits: about 1.6 deliveries a month, each fill lasting 19 days.

Inside your limits
  • Bulk tank
Over a limit
  • Microbulk tank59 deliveries a month
  • Liquid cylinders24 changes a week
  • High-pressure cylinders203 changes a week

A month at your site

Changed by your staff

Over: 203 changes a week against your 10

Over: 24 changes a week against your 10

Delivered by your supplier

Over: 59 deliveries a month against your 8

Fits: 1.6 deliveries a month against your 8

Rust: inside every limitGrey: over a limit or oversizedBlue mark: your limit30.44 days, steady use, one tick per fill; ticks closer than 0.4% of the month merge into a band. Pick a lane to put it on your sheet. Vessels are schematic, not to scale.

The same month in figures
Supply modeEach fillFills a monthEach fill lastsAgainst your limits
High-pressure cylinders50 lb 2 8820.8 hours Over (203 changes a week against your limit of 10)
Liquid cylinders (dewars)414 lb 3 1076.9 hours Over (24 changes a week against your limit of 10)
Microbulk tank750 lb 4 5912.4 hours Over (59 deliveries a month against your limit of 8)
Bulk tank On your sheet28,000 lb 5 1.619 days Fits (1.6 deliveries a month against your limit of 8)

Fewest fills inside your limits · line 05 of your sheet

Bulk tank

Inside all your limits.

0day 30.44

Fills assume each one tops up an empty vessel, so these are the fewest possible; topping up earlier means more.

Each fill
28,000 lb 5
Fills a month
1.6 (0.4 a week)
Each fill lasts
19 days
Who handles it
The supplier delivers and fills on site
Against your limits
Fits: 1.6 deliveries a month against your limit of 8
Storage
Ask for both: a leased tank under a service agreement, and a per-pound price if you own one 9 (compare leasing and owning)
Level monitoring
Suppliers describe remote telemetry of tank level and pressure 10; ask whether refills are scheduled from it
Sizing guide
Chart pairs beverage carbonation at 10 to 25 tons a month with 14 to 30 ton bulk tanks 5

Follows the use: beverage carbonation

Grade and documents

Grade
Beverage
Quality
ISBT bulk CO2 quality and food safety guidelines 7
Verification
CGA G-6.2, quality verification level G, H or I 8
Purity
99.9% or more 6
Each delivery
  • Certificate of analysis with each delivery
  • Statement that the product meets the ISBT guidelines and the CGA G-6.2 level

Send it

The sheet is your specification, filled from the figures above and numbered so each supplier can answer line by line. Send it to each supplier you are talking to. Millsheet does not quote, sell or ship, and does not contact suppliers.

Millsheet · Request for quotation

Carbon dioxide, bulk tank

Draft: not yet recordedPrepared from your stated use

Ask every supplier to quote on
01Product and gradeCarbon dioxide, beverage grade: ISBT quality guidelines, CGA G-6.2 quality verification level G, H or I, 99.9% purity or more
02Volume44,092 lb a month (20 metric tonnes; 1,449 lb a day on average)
03Delivery pointFresno, CA
04Startto be agreed
05Supply modeBulk tank, 28,000 lb a fill: about 1.6 deliveries a month, each fill lasting 19 days
06StoragePlease quote both: a tank leased under a service agreement, and a per-pound price to fill a tank we own
07DeliveryHow refills are scheduled (from usage or fixed), remote level monitoring, the minimum delivery, and what happens if we run short
08DocumentsCertificate of analysis with each delivery; Statement that the product meets the ISBT guidelines and the CGA G-6.2 level
09Price basisPrice per pound or per ton delivered, tank or cylinder rental, delivery charges, any surcharges, contract term
10UseBeverage carbonation or dispensing

Volumes are the buyer's stated use. Indicative arithmetic, not a quote; a supplier's own sizing and terms firm it up.

Download .txt Open in your email

Record with Millsheet

What happens next. You get a reference number and your specification, ready to send to producers and distributors. We look at every requirement, and when we can source the grade to your delivery point or get it quoted, we reply to the email you leave. Nothing is ordered or committed until you agree terms. Contact details are kept apart from the requirement and deleted after 180 days.

How the figures are worked out

  1. Mass: 1 kg = 2.2046 lb 1, so 1 metric tonne = 2,204.6 lb. A US ton is 2,000 lb.
  2. Gas volume: 1 lb of CO2 = 8.7413 standard cubic feet, at 1 atmosphere and 70°F 1.
  3. A month is 30.44 days (365.25 / 12); a week is 7 days. Daily use = monthly use / 30.44.
  4. If you set a busiest month, every fill figure below is worked on it: busiest month = average month × (1 + your uplift).
  5. Fills a month = monthly use / one vessel's contents. Each fill lasts = one vessel's contents / daily use.
  6. On the month ruler, fills sit at day 0 and every "each fill lasts" after it, at steady use: ceil(fills a month) ticks.
  7. A mode is inside your limits when (a) vessel changes a week are within what your staff can handle (cylinders, liquid cylinders), or deliveries a month are within what your site can take (microbulk, bulk tank), and (b) one fill lasts no longer than your fill limit. A mode that passes (a) but not (b) is oversized. All three limits are yours.
  8. The verdict names the mode with the fewest fills a month among those inside every limit. It goes on line 05 of the sheet unless you pick another lane; a pick outside a limit is carried with the reason.
  9. When nothing fits because deliveries are too frequent, the smallest bulk tank that would fit = busiest month in lb / 2,000 / your deliveries limit, rounded up to a whole US ton.
  10. Vessel sizes are typical ones from the sources 2 3 4 5; set your supplier's on each lane.
  11. A recorded sheet's reference (MS-CO2-XXXX-XXXX) is the record's id, first 40 bits, written in Crockford base 32. It stays on the sheet only while every line matches what was recorded.

This plan as data (JSON)

Sources

  1. Airgas, Converting Units of Measure for Gas (carbon dioxide table)1 lb of CO2 = 8.7413 scf (gas at 1 atm and 70 F); 1 kg = 2.2046 lb; 1 short ton = 2,000 lb
  2. Airgas, Food Grade Carbon Dioxide, 50 lb high-pressure cylindera 50 pound high-pressure steel cylinder contains approximately 50 lb
  3. Airgas, Carbon Dioxide, 180 liter liquid cylinder (350 psi)contains approximately 414 lb
  4. NuCO2, XactCO2 tank specifications; Chart Carbo seriestanks of 300, 550 and 750 lb (Chart lists 302 to 1,058 lb net capacity)
  5. Chart Industries, Bulk CO2 Applications and Storage Systemsbulk tanks of 6 to 50 tons, up to 100 tons; beverage carbonation at 10 to 25 tons a month paired with 14 to 30 ton tanks
  6. Matheson, grade specifications for liquid carbon dioxidebeverage grade conforms to CGA G-6.2 quality verification levels G, H and I at 99.9% purity or more; food grade 99.5%; industrial grade 99%
  7. ISBT, Bulk Carbon Dioxide: Quality and Food Safety Guidelinessets finished-product impurity levels for beverage grade bulk carbon dioxide (members' publication)
  8. CGA G-6.2, Commodity Specification for Carbon Dioxide (7th edition, 2025)defines quality verification levels for carbon dioxide
  9. NuCO2, programs and pricingequipment leasing and service agreements; refills scheduled from the usage pattern; a per-pound plan where the customer owns the equipment
  10. Linde, beverage carbonationremote telemetry monitors the customer's storage tank inventory and pressure
  11. City of Lompoc, published bid document for liquid carbon dioxide (water treatment)a public drinking-water solicitation that requires carbon dioxide conforming to AWWA B510 and a certificate of analysis with each load
  12. NSF, NSF/ANSI/CAN 60: Drinking Water Treatment Chemicals, Health Effectsthe standard that certifies chemicals added to drinking water in treatment for their health effects