Enough to compare it with another one, which is a lower bar than most quotations clear.
The Two Figures That Decide Ten Year Cost
Static evaporation rate, and what it converts to as a weekly nitrogen order at your capacity. Without both, two quotations cannot be compared, because the cheaper vessel frequently carries the higher running cost.
What Silence on Safety Devices Means
BCGA Code of Practice 36 requires at least two independent safety devices on the inner vessel of a pressurised tank, typically a relief valve and a separate bursting disc, with the outer jacket relief set to open at not more than 0.5 bar. A quotation that does not itemise them is a different specification, not a cheaper one.
The Lines That Get Left Out
Racks and canisters matched to your straw format. Monitoring, which larger vessels often include and smaller ones rarely do. The relay to a building management system. Roller base or trolley. Delivery and positioning, including whether the vessel fits the access route.
Where a vessel operates above 0.5 bar gauge, the Pressure Systems Safety Regulations 2000 require a written scheme of examination. The full list is in the cryopreservation equipment procurement guide and the cost drivers in liquid nitrogen container price.
