What safety precautions should be observed when taking samples on-site?

Be careful to protect yourself from burns, poisoning, etc., pay attention to the representativeness of the samples, and avoid waste.

What safety precautions should be observed when taking samples on-site? When going to the site for sampling, it is necessary to wear proper protective equipment; one should stand upwind during sampling; when replacing samples, it is important to do so from the side; and the sampling valve should be closed promptly after sampling

Precautions for safe laboratory operations (1) When sampling personnel go to the site to collect samples, they must wear appropriate personal protective equipment. (2) When taking gas samples, one must position oneself properly (in the upwind direction). (3) Be familiar with the properties of the hazardous chemicals in this position. When taking samples at the production site, protective gloves and safety glasses must be worn. (4) When taking liquid acids or bases, the valve should be opened slowly to sample; otherwise, the acid or base liquid may spray out, posing a danger. (5) When preparing a crude solution using hydrochloric acid, concentrated sulfuric acid, ammonia water, etc., protective equipment such as rubber gloves and safety glasses must be worn; in the event of any splashing on the body, rinse thoroughly with plenty of water. (6) When taking solid alkali samples, a dry sampler and glass containers must be used, and the movements should be gentle to prevent the alkali from splashing onto the body and causing burns. (7) Do not turn on the switch with wet hands to avoid electric shock accidents. (8) The laboratory should be well-ventilated; operations involving toxic and harmful substances should be carried out in a fume hood to minimize the concentration of such substances in the air and ensure safety. (9) In the event of a fire or an electric shock incident involving electrical equipment, the power supply should be cut off immediately to carry out handling or rescue efforts. (10) When handling toxic chemical reagents, care should be taken to avoid direct contact with the human body, and hands must be washed thoroughly after use. (11) It is prohibited to suck the sample with the mouth during operation; a suction bulb should be used to collect the sample. (12) Flammable and explosive materials must not be stored near ovens and electric furnaces, and items unrelated to analysis must not be placed on the analysis table. When electrical equipment malfunctions, it should be reported to an electrician for repair; do not touch it casually. (13) After completing the work, check that the doors and windows are closed and that the instruments and equipment have been powered off. (14) Analysts must wear the prescribed personal protective equipment during working hours, stay at their posts, and fulfill their duties diligently.

Be cautious of high temperatures and prevent splashing; wear appropriate protective equipment such as gloves and face shields. When collecting samples of toxic gases, use a detector for such gases, and make sure to close the sampling valve after taking the sample.