Start from your products and your premises
List every refrigerated line you hold and the storage statement on its label. Most will read +2 to +8 °C; note any that are light-sensitive, any that must not be frozen and any that need a different band. Estimate the peak stock — the week before a vaccination drive or a festival, not an average week — and the size of the largest cartons.
Then describe the room: is it air-conditioned around the clock, or does it reach 40 °C on a May afternoon with the shutter down? Is the supply steady, and how long are typical power cuts? These answers drive almost every line of the specification.
Turning needs into a written requirement
Each requirement should be something you can check. 'Good cooling' cannot be tested; 'holds +2 to +8 °C at every shelf position in a 40 °C room' can.
| Requirement | Example wording | How to check it |
|---|---|---|
| Temperature band | Holds +2 to +8 °C on all shelves, aiming for about +5 °C | Supplier test data; your own logger readings during acceptance |
| Rated room temperature | Stays in band at the hottest room temperature you expect | Written rated ambient on the datasheet |
| Recovery | Returns to band within a stated time after a door opening | Supplier test data; a timed door-open check on site |
| Control | Electronic controller with a digital sensor, fan-forced air | Datasheet and visual inspection |
| Alarms | High, low, door-open and power-fail alarms | Trigger each alarm during acceptance |
| Security | Lockable door; keys controlled | Inspection |
| Electrical | Operating voltage window that covers your site's supply | Datasheet; measure your supply |
Monitoring requirements
Write the monitoring system into the same document, because the fridge and its logger are judged together. Good practice is an independent digital data logger with a buffered probe placed among the stock, a display readable without opening the door, high and low alarms and downloadable records. The US CDC toolkit adds useful benchmarks: an uncertainty of ±0.5 °C, logging at least every 30 minutes, a current calibration certificate and a spare device. Treat those as reference points; your regulator's expectations come first.
Layout, shelving and security
- Open wire or perforated shelves so air reaches every pack; no storage on door shelves or in zones the manufacturer marks as unstable.
- Capacity for peak stock without packs touching the back wall, the fan outlet or each other.
- A lock, and a self-closing door with a door-open alarm.
- Glass or solid door chosen deliberately: glass reduces door openings, solid doors protect light-sensitive products and hold temperature better.
- A separate cabinet for anything that isn't medicine — never food or drinks with stock.
Documents to ask for with the quote
- Datasheet with temperature range, rated ambient, voltage window and power draw.
- Any temperature uniformity or recovery test data, with the conditions under which it was measured.
- Installation clearances and electrical requirements.
- Defrost method and how the unit stays in band during defrost.
- The logger's calibration certificate, if a logger is supplied.
- A named service contact, response arrangement and spare-parts availability in your city.
Acceptance checks before stock goes in
Install the unit with the clearances specified, on its own earthed socket, and let it run empty. The CDC toolkit notes that a new or repaired refrigerator can take 2 to 7 days to stabilise and treats it as ready after two consecutive days of readings in range. Use that period to record minimum and maximum temperatures, test every alarm and time a door-open recovery.
For larger cabinets or a formal quality system, go further with temperature mapping — placing several calibrated loggers across the shelves to find hot and cold spots. File the results with the requirement document; together they show the fridge was fit for purpose on day one.
Where the binding requirements come from
This page describes a practical method, not a legal standard. Binding rules come from your licence conditions, the State Drugs Control authority, CDSCO and each product's label. For Universal Immunization Programme vaccines, the programme's cold chain guidance decides equipment. WHO's good storage and distribution practice guideline is a helpful reference when building a quality system around the fridge.
Frequently asked questions
- Why write a specification for a single pharmacy fridge?
- It makes quotes comparable, gives the supplier something concrete to meet and becomes part of your storage records. A one-page list of testable requirements is enough for most pharmacies.
- How long should a new pharmacy fridge run before stock goes in?
- Long enough to show stable readings. The US CDC toolkit suggests 2 to 7 days for a new refrigerator, treating it as ready after two consecutive days in range. Follow any period your regulator or quality system sets.
- Do I need temperature mapping for a small pharmacy fridge?
- It depends on your quality system and regulator. Many small pharmacies rely on supplier data and an independent logger; larger stores and distributors usually map. Ask your drug control authority what they expect.
