. The LoWry method is suitable for the determination of trace proteins, and it is convenient for multiple samples to be measured at the same time. However, insoluble proteins and membrane binding proteins must be pre-treated (e.g. by adding a small amount
Common problems and solutions for alcohol-soluble inorganic zinc silicate primers
Time of Update: 2020-12-27
on the surface, the remaining mixed coatings must not be used. 3.3 Application method (1 ) airless spray or traditional spray, repair can be used brush coating, construction is best to continue mechanical stirring paint solution
The soluble mercury content in the coating was determined by a direct mercury meter
Time of Update: 2020-12-10
Using direct mercury meter to determine the soluble mercury content in the coating, with low sampling, high sensitivity, good precision, fast analysis speed, no reagent contamination, can be directly sample determination and other advantages, and achieved satisfactory test results.
Methods for direct determination of mitomycin C in aqueous solutions and in urine
Time of Update: 2020-12-06
It is possible to prepare a MMCmodified electrode, which, after a washing step, is transferred to the background electrolyte to determine MMC by voltammetry.
Direct determination of unbound lipophilic ligands in aqueous solutions
Time of Update: 2020-12-02
Due to their hydrophobic nature, lipophilic compounds are always bound to proteins when transported in the organism. The transfer of such compounds between their binding proteins and cells as well as intracellular trafficking is mediated
The influence of paint film thickness and other factors on the determination of soluble lead and chromium content in coatings
Time of Update: 2020-11-28
, Sartorius; DHG-9075A type electric blower drying box, Shanghai Heng Scientific Instruments Co., Ltd.; QSX-21A thickness meter, Tianjin Construction Instrument Factory. reagents and solutions: hydrochloric acid, pure analysis, Beijing chemical
The determination of common faults of high-efficiency liquid chromatography and the determination and solution of common faults
Time of Update: 2020-11-21
buffer capacity is not sufficient 25mmol/L buffer Condition changes stable sample conditions, adjust the flow phase column fast to reach the life of the protection column (ii) retention time shortened 1.
Determination of soluble sugar content: ketone method.
Time of Update: 2020-10-29
the purpose of . 1. Understand the principle of the ketone method to determine soluble sugar content2. Learn to find the standard curve equation - least square multiplication 3. Master the use of -photometric
Determination of soluble sugar content in plants (ketone method)
Time of Update: 2020-10-28
absorption at 620nm wavelength in the visible light region, and its light absorption value in a certain range is positively related to the content of sugar. method can be used for the determination of the content of monosaccharose
Determination of the solubility of acetaminophen tablets.
Time of Update: 2020-10-21
is the speed and degree at which a drug dissolves from a solid preparation, such as a tablet or capsule, in a specified solvent.
The ketone method determines soluble sugars.
Time of Update: 2020-10-17
straws 0.5ml 1, 2.0ml 3, 5ml 4; light-splitter; marker pen. III, reagents ethyl acetate reagents: take analysis of pure ketone 1g, dissolved in 50 ml ethyl acetate, stored in brown bottles, can be stored in the dark for several weeks
Coating process: Determination of moisture and heat resistance of coating film
Time of Update: 2020-04-03
All construction coatings have passed ISO9001 Home of coatings: the wet heat resistance of paint film refers to the resistance of paint film to high temperature and high humidity environment.
Coating standard: gb1718-79 determination of water soluble matter of pigments
Time of Update: 2020-04-03
2.2 method B: weigh 5g of sample (2.5G of organic pigment, accurate to 0.0004g) by cold extraction method, put it in a 250ml beaker, add 100ml of distilled water, and put it on a magnetic stirrer for 30min.
Coating technology: Determination of soluble harmful elements in coating
Time of Update: 2020-04-03
Core tips: 1
Determination principle of soluble harmful elements in coatings: The dry film was treated with 0.07mol/l hydrochloric acid solution, and the content
Common knowledge of coating: reflectivity determines heat insulation efficiency
Time of Update: 2020-04-03
Core tip: the design principle of thermal insulation coating and thermal insulation paint is that when the ratio of the energy reflected by the surface of the object and the total
Coating process: Determination of heat resistance of paint coating
Time of Update: 2020-04-03
Preparation of test panel for determination of heat resistance of paint coating: Steel plate, tinplate, aluminum plate, etc.
Determination of suitable heat sealing parameters for pharmaceutical soft plastic packaging bags
Time of Update: 2015-04-17
Abstract: the setting of heat sealing parameters directly affects the heat sealing strength of the soft plastic packaging bag for drug packaging
The heat sealing
