What we have written on the cold chain147 / 154

The protocol sets out, for each test group, the tube, fill volume, holding condition and the latest arrival time at the lab. Most rejections start at collection rather than in transport.

Global warehouse volume is not your product capacity. Check the report scope, then calculate usable space and stock duration from local data.

Routine wiping and decontamination after a spill are two separate procedures, each with its own solution strength, contact time and record. The dilution figures come from CDC and the DAS guide; the arithmetic is worked from the percentage on the bleach label.

The counterpart of the single-use styrofoam box is a reusable EPP thermobox with eutectic plates, and the TBX container for larger volumes. Cost per trip and the return of the container decide the choice.

An audit form that follows one consignment from goods-in to delivery asks at every stop for a record ID, observed evidence, an owner and a closure method.

A tonne of broccoli gives off about 890 W at 20 °C and 62 W at 0 °C. Respiration heat by commodity from USDA data, the conversion factor and a worked example.

Two values matter in a vaccine fridge log: the highest and lowest temperature seen since the last reading. A spot reading does not show an overnight excursion.

Divide meter water by accepted clean containers. Count prewash, rinsing and cycles within the same boundary to compare periods.

In hot holding the risk sits in the total time spent in the danger zone, not in a single reading. The log carries the service start time next to the temperature.

Each reading is one line: time, point code, instrument, reading, event note, action on a deviation and who took it. Point codes come from the warmest and coldest spots found by mapping.

Age alone does not show container performance. Track damage and compare a suspect unit with a sound reference under matched conditions.

Make dry ice locations, owners, CO₂ monitoring and emergency steps visible in the procedure. Review legal duties with a safety specialist.