What we have written on the cold chain148 / 154

Container count comes from units simultaneously on route, returning, being washed or prepared. Use an event table to find the real peak.

Pair duration with load, ambient conditions, sensor, openings and acceptance limit.

Do not assume one emissions factor for dry ice. Record consumed quantity, supplier-data boundary and the reporting method together.

A specification usually gives volume and temperature, but the product entry temperature and the pull-down time are often missing. Below, the cooling power for an example load of 1,000 kg is worked out.

A sheet, a cut part and a ready-to-ship foam box are not the same quote. The specification sets out the scope of delivery, measurable technical lines and performance written as a duration.

Turn current product and vaccination-program instructions into measurable acceptance clauses.

Communiqué 2014/47 requires -18 °C or colder at every point of the product. The 3 °C allowance covers only short rises in transport, distribution and retail cabinets.

In pharmaceutical transport a specification buys qualification rather than a box: target range, qualification report, instructions, coolant separation and logger.

Packaging is usually decided on a one-year budget, yet a container circulates for years. A ten-year comparison is made per delivery and includes repairability and changing rules.

In specimen transport the hard part of the specification is containment, not temperature. Write the three layers, absorbent capacity, temperature regime and validation route as separate clauses.

Logistics indicators cannot be compared when period, activity boundary and denominator differ.

A specification starts with the component: red cells travel at +2/+6 °C, platelets at 20-24 °C, fresh frozen plasma frozen. The clauses follow the transport section of the Turkish National Blood and Blood Components Guide.