How to manage consumables in customs laboratories?
Although laboratory consumables are not a theme, the laboratory consumes a large amount of reagent consumables every day. Its importance is self-evident. Strengthening the management of consumables is an important measure to do a good job in laboratory management and ensure the quality of testing work. This article will introduce the scientific and efficient management of laboratory consumables.
1. The importance of laboratory consumables management
Second, the key points of laboratory consumables management that are prone to problems
1. The classification of consumables is not clear enough
Experimental consumables include reagent consumables and non-reagent consumables. Reagent consumables include: chemical reagents, reference reagents, standard materials, laboratory water, microbial culture media, kits, solutions or solid mixtures prepared by related reagents, etc. Non-reagent consumables include: glassware, experimental gas, instrument-specific consumables, filter paper, rubber products, etc. The inspection consumables have explosive, flammable, poisonous, infection, corrosion, radioactive and other dangerous characteristics. During transportation, storage, use and disposal, they are likely to cause personal injury and death, property damage, or environmental pollution. Items that require special protection and easy to make drugs Chemicals become "dangerous goods". The catalog of dangerous goods is determined in accordance with GB6944 "Classification and Numbering of Dangerous Goods", "Catalog of Highly Toxic Chemicals" and "Catalog of Classification and Varieties of Precursor Chemicals". In actual experiments, experimenters often cannot make clear classifications like written regulations. Therefore, relevant personnel must always maintain laboratory safety awareness and take protective measures, and always take laboratory safety at heart.
2. The inspection and acceptance of consumables is not strict
The acceptance of consumables is related to whether the quality of the consumables meets the standard. Due to the lax acceptance of some laboratory personnel, some suppliers are shoddy, resulting in the quality of consumables not meeting the requirements, which affects the normal development of subsequent experiments.
3. Inadequate storage of consumables
After the consumables are put into the warehouse, they are not sorted and stored at will, and there is no relevant requisition record when they are used. It is easy to cause some consumables to expire and be scrapped, which causes a lot of loss to the laboratory's funds.
Three, standardize the daily management of consumables
1. Consumables procurement plan and implementation management
The laboratory should formulate a detailed procurement plan according to its actual needs and purchase according to the plan. On the one hand, the planned procurement can eliminate financial waste and reduce unnecessary inspection and acceptance work, on the other hand, the quality of work is also guaranteed. The procurement plan should be detailed and specific, clarify the types, quantities, specifications, grades, timeliness of procurement, expiry dates of consumables, and whether certificates are required and other supporting documents. Dangerous goods consumables should be signed by specialized personnel. The laboratory shall establish a sound supplier file, maintain at least 3 suppliers of the same type of supply, investigate and evaluate their qualifications, credibility, strength, etc., to ensure the economy of consumables while ensuring their quality. Purchasing situation, regularly evaluate and supervise suppliers.
2. Consumables acceptance management
The acceptance of consumables must be strictly checked, and the links that affect the quality of consumables must be carefully verified to eliminate risks. This is the accumulation and summary of previous laboratory experience and lessons.
The management department is responsible for the inspection and acceptance of the types, quantities, specifications, grades, shelf life, and quality certification documents of consumables. The user department is responsible for the acceptance of the quality of consumables, and the acceptance of key consumables should be guided by the corresponding documents. For example, measuring glass utensils such as graduated straws, measuring cylinders, volumetric flasks, etc. consume a lot in the laboratory. It is impossible for us to verify every glass utensil in actual work, but at least one set of verified utensils should be kept for purchase Comparing and accepting the measurement glass instruments to confirm that the accuracy of the purchased glass instruments is within the controllable range.
The organic solvent used in the chromatogram should be tested for interference to the target peak to be tested; the hydrochloric acid, nitric acid, and sulfuric acid used in the detection of trace elements should be tested for background interference; the microbial culture medium can be checked and accepted by negative and positive control experiments; Laboratory water can be inspected and accepted according to the national standard GB6682-2008 "Analytical Laboratory Water Specifications and Test Methods".
The most likely problem in procurement acceptance work is that some laboratory supplies acceptance is a mere formality, while some laboratories will have to accept a brand product once and then purchase it later without accepting it. Some laboratories think that as long as they are well-known reagents produced by large factories, there is no problem. These behaviors are extremely irresponsible for the inspection work and will bring risks to the quality of our inspection work. Any product has a range of fluctuations in the pass rate and quality indicators. We cannot overly believe that the quality of the company's product is 100%. Therefore, consumables that have not been accepted or failed to pass the acceptance shall not be put into the warehouse, and the consumables that have passed the acceptance can be put into the consumables warehouse, and the inventory ledger shall be established.
3. Inbound and outbound management of consumables
The consumables warehouse should have detailed records of inbound, inventory, outbound, and outbound records to ensure that the accounts are consistent. Compile electronic documents of inventory consumables, update them in real time, for use and management personnel to review. Different consumables are stored according to their characteristics: highly toxic drugs are stored separately with double locks; oxidizing substances and reducing substances are stored separately; organic and inorganic substances are placed in separate areas; solids are on the top, and liquids are on the bottom. According to the storage requirements of consumables, equip with safety facilities, do a good job of environmental monitoring of the consumables warehouse, fill in monitoring records, and ensure that the environment meets the requirements. Strengthen the management of dangerous goods, implement double double locks for violent drugs, measure and use, and return the surplus. Open flames and other non-consumable items are strictly prohibited from entering the warehouse.
4. Consumables use management
When using consumables, pay attention to protecting the labels of the consumables to prevent contamination and damage of the labels. Those requiring special storage shall meet the storage requirements and make relevant records; pay attention to the expiry date of consumables, and use consumables within the expiry date. Consumables that exceed the expiry date are generally treated as inspection waste to prevent misuse. After the reagent is taken, the bottle mouth should be closed effectively in time to prevent the reagent from being ineffective or spilling over to pollute the environment or cause safety accidents. After the bottled reagents and consumables are used up, the empty bottles should be returned to the consumables library, and the empty reagent bottles shall not be disposed of or discarded at will.
The prepared reagent solution should meet the specified requirements, and the label should be attached in time. Appropriate containers should be used to store reagents, and volumetric flasks, graduated test tubes, etc. should not be used for long-term storage of configuration solutions. The experimental gas cylinder should be fixed as necessary to prevent it from falling and causing accidents; when replacing the gas cylinder, pay attention to leak detection at the valve connection.
Four, summary
The management of laboratory consumables is an important factor that affects the quality of testing work. We do a good job of management and standardize it, which can not only ensure the efficient conduct of experiments, but also reduce our own risks and provide customers with accurate, high-quality, and objective information. Testing data can also save a lot of laboratory expenses. In the future work, the laboratory should strengthen the standardized management of consumables, pay attention to checking for deficiencies, and improve the ideological awareness of personnel, so that the customs laboratory can reach a new level.
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