GB/T 5275.7-2025

Active

Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 7:Thermal mass-flow controllers

气体分析动态法制备校准用混合气体第7部分：热式质量流量控制器

Standard Type

GBT

ICS

71.100.20

CCS

G86

Status

现行

Issue Date

2025-10-05

Implementation

2026-05-01

Responsible Dept

中国石油和化学工业联合会

Drafting Unit

N/A

🔗 Related Standards / 同类标准

GB/Z 43890-2024 Nanotechnologies—Guidelines for performance test method of silver nanomaterials GB/T 1631-1979 Classification，designation and types of ion exchange resin GB/T 5328-1985 Surface active agents--Simplified classification GB/T 5327-1985 Surface active agents--Terms GB/T 7918.5-1987 Standard methods of microbiological examination for cosmetics--Staphylococcus aureus GB/T 7918.4-1987 Standard methods of microbiologicalexamination for cosmetics--Pseudomonas aeruginosa GB/T 7918.3-1987 Standard methods of microbiological examination for cosmetics--Fecal coliforms GB/T 7918.2-1987 Standard methods of microbiological examination for cosmetics--Standard plate count