Search results for keyword: hydroxide
Supplementary designation at the end of the bearing model number
Sanitary bearing codes
1. AB: Acrylonitrile-butadiene rubber, suitable for food-grade material;
2. AC: Acetylcellosolve, mainly used in the bearing of a food-grade material;
3. AD: Azelastine, an antimicrobial material used to make components and other materials suitable for food grade applicat......
1023 
Olivia
GB 609-88 Chemical Reagents - General Method for Determination of Total Nitrogen
GB 609-88 Chemical Reagents – General Methods for the Determination of Nitrogen Content
Chemical reagents, also known as “analytical reagents” and “analytical chemistry,” are chemical substances used to detect, measure, and analyze the composition of various materials. China’s GB 609-88 mea......
GB 6816-86 Water Quality Vocabulary Part I and Part II
GB 6816―86 Water Quality - Vocabulary - Part 1 and Part 2
GB 6816-86 is a Chinese national standard developed to define the water quality of waterways and related bodies of water throughout China. This standard is known as the Water Quality Vocabulary because it provides a uniform and accepted l......
GB/T 13906-92 Determination of nitrogen oxides in air quality
GB/T 13906-92 Air Quality -- Determination of Nitrogen Oxides
This Standard GB/T 13906-92 specifies a method for determining nitrogen oxides in normal atmospheres. It is applicable to the determination of the concentration and transformation rate of nitrogen oxides in the atmosphere.
The main pr......
GB/T 15262-94 Determination of sulfur dioxide in ambient air Formaldehyde absorption-pararosaniline spectrophotometric method
GB/T 15262-94 Determination of sulfur dioxide in ambient air—Methanol absorption-pararosaniline spectrophotometric method
1. Introduction
Sulfur dioxide (SO2) is a colorless, odorless gas, which is mainly from industrial and domestic combustion sources. It is one of the major causes of air poll......
GB 13580.5-92 Determination of fluorine, chlorine, nitrite, nitrate and sulfate in atmospheric precipitation
，回答以下几个问题：
Introduction
Atmospheric precipitation is a water cycle process and usually blended with aerosol particles, dust and other substances. These substances include halogens (such as fluoride and chlorine), nitrite, nitrate, sulfate, etc. The Chinese national standard GB 13580.5-92......
Determination of GB/T3781.8-93 Acetylene Carbon Black Hydrochloric Acid Absorption
GB/T3781.8-93 Determination of Absorption Capacity of Acetylene Carbon Black
Acetylene carbon black, also referred to as furnace black, is a form of carbon created by the partial combustion of methane and other hydrocarbons. It is a strong adsorbent, possessing a high surface area, a low density,......
GB/T534-2002 industrial sulfuric acid
GB／T534-2002 Industrial sulfuric acid
1. General
This standard stipulates the quality requirements and its test methods, rules and signs of industrial sulfuric acid. This standard is applicable to sulfuric acid of sulfur dioxide smelting, industry and its products of absorbed water, qualified p......
After silver plating
Post-plating silver processing
Silver plating can provide various metallic objects with a strong and attractive outer layer, protecting them from abrasion, chemical corrosion, and other forms of wear and tear. While the process of silver plating is relatively straightforward and simple, it is impo......
Influence of temperature of hydrochloric acid solution on pickling
The Effect of Sodium hydroxide Temperature on Acid Pickling
Acid pickling is a widely used method in industrial manufacturing processes. It involves the contact of a metal surface with a solution of acid, usually sulfuric acid, hydrogen chloride, or hydrochloric acid, for a period of time. This p......
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