Bulk, Cylinder or Self Collect: Choosing a Liquid Nitrogen Supply That Fits the Store You Actually Have
Laboratories rarely choose their nitrogen supply. They inherit it. The arrangement was set up when the first vessel arrived, deliveries kept coming, and nobody revisited it as the store grew. It is worth revisiting, because supply mode and delivery frequency together decide a running cost you carry every week for as long as the samples are stored. Bulk delivery Bulk fills a static tank on site from a tanker. Lowest unit cost, least handling. It needs a permanent external installation, vehicle access, a concrete base, appropriate separation distances and a multi year agreement. Right for high, steady consumption. Cylinder and portable vessel delivery Pressurised vessels are supplied on exchange. Higher unit cost, no fixed installation, scales with the order. Most IVF laboratories and research units belong here. Self collect Taking your own dewar to a depot. Cheapest on paper, until staff time, vehicle arrangements and the transport risk assessment are counted. Suitable for small, infreq...