Ensuring proper storage conditions for medicines is one of the fundamental requirements for organizing the work of any pharmacy. Strict temperature conditions directly affect the chemical composition of medications, their therapeutic effectiveness and safety for the end user. That is why the issue of monitoring temperature parameters is in first place in the list of tasks of the pharmacist and the head of the pharmacy.
The central element of the monitoring system in this context is measuring device, which allows you to record deviations in real time. The number of such devices, their type, accuracy class and location are regulated by current sanitary rules and regulations. Errors at the stage of equipping refrigeration equipment can lead to damage to expensive vaccines or antibiotics, as well as to serious fines from regulatory authorities.
In this article we will analyze in detail the requirements for equipping pharmacy refrigerators, we will figure out how many control devices are really needed, and consider the nuances of their calibration. Understanding these rules will help to avoid common mistakes and ensure the complete safety of the pharmaceutical assortment.
Regulatory framework and regulatory requirements
The main document regulating the storage of medicines in the Russian Federation is Order of the Ministry of Health of Russia No. 646n “On approval of the Rules of Good Pharmacy Practice...”. This document sets strict limits for the temperature regime, requiring the maintenance of a temperature of +2 to +8 °C for drugs requiring special conditions. Monitoring compliance with these parameters is carried out using certified measuring instruments.
In addition, it is necessary to take into account the requirements of GOST R 52233-2004 and SanPiN 2.3.4.050-93, which determine the general principles of operation of refrigeration equipment in trade and pharmacy. According to these standards, temperature conditions must be monitored continuously or at minimal intervals. If deviations are detected, the system must signal this to personnel. Ignoring these requirements is equivalent to a violation of storage conditions.
⚠️ Attention: The regulatory framework may be updated. Before purchasing equipment, be sure to check the current version of the Order of the Ministry of Health and the requirements of Roszdravnadzor in your region, as local regulations may contain additional clarifications.
It is important to note that the regulators require not just a thermometer, but a verified device with a valid certificate. Measurement error should not exceed the permissible values specified in the device passport. The absence of a valid verification certificate makes any readings from the device legally void during verification.
The optimal number of thermometers in the refrigerator compartment
The answer to the question of how many thermometers there should be in a refrigerator in a pharmacy depends on the volume of the refrigerator compartment and the type of stored products. For a standard single-compartment pharmacy refrigerator, the minimum requirement is one main measuring device. However, given the importance of uninterrupted monitoring, the installation of a backup device is strongly recommended.
If we are talking about a large one pharmaceutical refrigerator with several sections or a large internal volume, one device will not be enough. In such cases, the temperature field inside the chamber may be non-uniform. To ensure accurate measurements, it is necessary to install additional sensors in potential risk areas - at the door, at the back wall and in the center of the chamber.
Modern models are often equipped with built-in digital monitoring systems. In this case, the external thermometer acts as an independent standard for verifying readings. This allows you to identify possible drift of readings built-in electronics and calibrate the system in time.
Rules for placing measuring instruments
The correct placement of a measuring instrument is no less important than its presence. Incorrect installation may give false data on the air temperature in the chamber. The main thermometer should be located in an area where the temperature is most stable, but still reflects the average value over the volume. This is usually the central part of the middle shelf.
It is strictly forbidden to place the thermometer directly near the ventilation openings, against the walls of the evaporator, or in the immediate vicinity of a doorway. In these areas, maximum temperature changes are observed when opening the door or operating the compressor. Measurement point must be protected from direct contact with cold air flow.
For drugs stored in special cells or on lower shelves, where the temperature may be lower, it is recommended to place additional remote sensors. This is especially true for static-type refrigerators, where natural air convection is difficult. The distribution of sensors allows you to build a real temperature map inside the chamber.
- 🌡️ Place the main thermometer on the middle shelf, deep in the chamber, away from the walls.
- 🚪 Avoid installing devices in the area of direct air flow from the evaporator.
- 📦 Consider the loading density: when fully loaded, more control points are required.
- 🔌 For digital systems, use remote probes for monitoring in different zones.
Types of thermometers: alcohol, digital and thermographs
The choice of the type of measuring device determines ease of use and reliability data. The traditional solution remains alcohol thermometers. They are simple, do not require power and are cheap. However, they have high inertia (show the real temperature for a long time) and the risk of breaking, which is unacceptable in a pharmacy due to the toxicity of the contents (unless these are special safe analogues).
A more modern solution is electronic thermometers with a remote sensor. They provide high accuracy and allow readings to be displayed on an external display. This is convenient for daily monitoring without having to open the door and break temperature mode. Many models are equipped with an audible alarm when the range is exceeded.
The most advanced solution for pharmacies is the use of thermographs temperature loggers. These devices not only show the current value, but also record a history of changes to the internal memory. In the event of an inspection or incident, you will be able to provide a printout or file with a graph of temperatures for any past period.
Why are mercury thermometers prohibited?
The use of mercury thermometers in pharmacy refrigerators is highly undesirable and is often prohibited by internal safety regulations. If broken, mercury is mixed with products, condensate and can enter the ventilation, creating a threat of poisoning and requiring expensive demercurization of the entire room.
Verification and calibration: legal aspects
Any measuring device used to control storage conditions of drugs is subject to mandatory periodic inspections. metrological verification. The verification interval is set by the manufacturer and is usually one year. After successfully completing the procedure, a mark is applied to the device and a certificate is issued, which must be kept in the pharmacy.
Using a device with an expired verification period is equivalent to a lack of temperature control. During an inspection by Roszdravnadzor, such devices will be confiscated, and a fine may be imposed on the pharmacy. Therefore, keeping a log of verification dates is mandatory.
| Device type | Interverification interval | Operating features |
|---|---|---|
| Alcohol thermometer | 2 years (usually) | Fragile, high inertia |
| Digital thermometer | 1 year | Requires battery replacement |
| Thermograph (logger) | 1 year | Requires software for data reading |
| Built-in sensor | 1 year | Testing the entire unit controls |
Keeping a log of temperature conditions
The presence of thermometers is meaningless without recording their readings. Each pharmacy must keep a temperature log. Entries are made in it regularly, as a rule, twice a day (morning and evening), as well as each time a new batch of goods is loaded.
The date, time, thermometer readings and the signature of the person in charge are entered into the log. If an automated system is used, it can generate an electronic log, which must also be protected from retroactive editing. Temperature control must be a continuous process.
☑️ Checking the temperature regime
If deviations from the norm are detected (for example, the temperature has risen above +8 °C), a corresponding entry should appear in the log indicating the time of detection and the measures taken. This could be moving medications to another refrigerator or calling technicians for repairs.
⚠️ Attention: Do not use pencil or erasable ink to keep journals. All entries must be made with a ballpoint pen, errors must be crossed out with one line and certified with a signature.
Actions in the event of equipment failures and malfunctions
Even the most reliable refrigeration unit may fail. If the thermometer detects a critical increase or decrease in temperature, you need to act immediately. The first step is a visual check: whether the door is tightly closed, whether the ventilation holes are clogged, whether the compressor is working.
If a technical malfunction is confirmed, the drugs that were in the risk zone should be isolated. They are labeled “Quarantine” or “Do not use”, and they are moved to a reserve refrigerator with working conditions. The use of such drugs before the examination is prohibited.
After eliminating the malfunction and restoring the mode, it is necessary to calibrate the thermometers, since voltage or temperature surges could throw off their settings. Only after re-inspection can drugs be returned from quarantine to the main exhibition.
Frequently asked questions (FAQ)
Can a household refrigerator be used to store medicines in a pharmacy?
The use of household refrigerators is allowed only in exceptional cases and for limited use list of drugs that do not require strict adherence to the +2...+8 °C regimen. The bulk of medicines and vaccines require specialized pharmaceutical equipment with uniform distribution of cold and precise electronics.
What to do if the thermometer’s verification period expired yesterday?
It is prohibited to operate a device with an expired verification period. It is necessary to immediately replace it with a verified backup device, and send the old one for extraordinary verification or dispose of it. The period when monitoring was carried out by a faulty device is considered a period of no monitoring.
How often do you need to take thermometer readings?
The minimum requirement is 2 times a day. However, for drugs with critical storage conditions or when the network is unstable, it is recommended to take measurements every 4 hours or use automatic loggers with continuous recording.
Is it necessary to check the built-in thermostat of a refrigerator?
Yes, built-in temperature control systems are also measuring instruments and are subject to verification as part of the equipment or separately, depending on the design and passport products. Without a verification stamp, their testimony has no legal force.