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The working principle of Kjeldahl nitrogen determination
According to the principle of Kjeldahl nitrogen determination, three steps are required for determination, namely digestion, distillation and titration. Digestion: Heat nitrogen-containing organic compounds (proteins) together with concentrated sulfuric acid and catalysts (copper sulfate or Kjel...Read more -
New product Kjeldahl nitrogen analyzer, Soxhlet fat analyzer, automatic digestion product exchange meeting
Today, in the meeting room of Shandong Derek Instrument Co., Ltd., the 2021 analytical instrument new product exchange meeting was held, involving DRK-K616 automatic Kjeldahl nitrogen analyzer, DRK-K646 automatic digestion instrument, and DRK-SOX316 fat meter. Products. This exchange meeting was ...Read more -
GBT453-2002 Supplement to Tensile Strength of Paper and Board (Constant Speed Loading Method)
Attention please! For the determination of the tensile strength of GBT453-2002 paper and paperboard (constant speed loading method), today the editor draws the key points for everyone! Key 1: Principle The tensile strength tester stretches the sample of the specified size to break under the condi...Read more -
Brief introduction of electronic fabric tearing machine
Electronic fabric tearing tester is suitable for testing the tear resistance of woven fabric, blanket, felt, weft fabric, and nonwoven fabric. Electronic fabric tearing device features: 1, the instrument with special aluminum profile table, shell metal paint processing, all the hammer made of s...Read more -
Soxhlet extraction principle fat tester brief introduction
Soxhlet extraction fat tester is based on the principle of Soxhlet extraction, the separation of organic compounds such as fat instrument, the instrument has soxhlet standard method (national standard method), soxhlet thermal extraction, hot leather, continuous flow and CH standard thermal extrac...Read more -
Brief introduction of static acid pressure tester
Static acid pressure tester is mainly used to test the resistance to liquid static pressure (static acid pressure) of fabric acid and base chemical protective clothing. It is the testing equipment for acid and base chemical protective clothing for acid and base chemical production enterprises for...Read more