T/LZZLXH 056-2021 Active Group standards

T/LZZLXH 056-2021 Standardization of Cultivation Media and Reagent Management for Laboratory Detection

Publish Date: 2021-01-25 Implement Date: 2021-02-26 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/LZZLXH 056-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Medical laboratory equipment

ICS Name: Integrated services

Publish Date: 2021-01-25

Implement Date: 2021-02-26

Scope

Main Technical Content: 7.3 Preparation of Self-made Laboratory Media 7.3.1 When preparing self-made media, the formula should be accurately followed. 7.3.2 In addition to the information specified in 7.2.2, the following information should also be included in the records of self-made media: a) The apparent characteristics of the media; b) The name, grade, content, manufacturer, and batch number of each component. 7.4 Preparation of Additives 7.4.1 Additives should be prepared according to the requirements of the product manual. 7.4.2 Unstable additives should be prepared and used immediately. 7.4.3 Expired additives must not be used. 7.4.4 Bulk-prepared antibiotic solutions can be frozen after dispensing, but the thawed solution should not be refrozen. 7.4.5 Suppliers or manufacturers should be required to provide information on the impact of freezing on antibiotic activity, and users may also conduct their own tests. 7.4.6 When additives contain toxic substances (especially antibiotics), careful handling is required, and operations should be conducted in a fume hood when necessary. 7.5 Water for Preparation 7.5.1 Unless otherwise specified, the conductivity of water for preparation should not exceed 25us/cm at 25°C. 7.5.2 The microbial contamination of water for preparation should be regularly checked using a plate count agar medium according to the method specified in GB 4789.2. The microbial count in the water should not exceed 103 CFU/mL. 7.5.3 Containers for water for preparation should preferably be made of neutral materials, such as neutral glass or polyethylene. Before initial use, it should be confirmed that they do not contain any bacteriostatic factors. 7.6 Weighing and Dissolution 7.6.1 If necessary, weighing should be conducted in a fume hood with a mask to prevent inhalation of toxic substance-containing media powder. 7.6.2 For dissolution, first add an appropriate amount of water, mix thoroughly (note to avoid me