Cleaning and maintenance of common gas chromatograph

Abstract: During the operation of the gas chromatograph, due to the environment, static electricity, the nature of the analyzed material, etc., the instrument needs to be cleaned and maintained regularly, and if necessary, the circuit board and electrical parts must be dedusted and injecte

Random priming

DNA polymerase must have a primer when performing DNA polymerization, because it can only use the 3'-OH provided by the primer as the starting point for extension work, and cannot re-synthesize new DNA in situ. (de novo synthesis). In general experiments, artificially synthesized oligo

Rat Cortisol (Cortisol) ELISA kit instruction manual

This kit can only be used for scientific research, not for the medical diagnostic rat (Rat) Cortisol (Cortisol) ELISA test kit instructions for use. The principle of detection kit uses double antibody one-step sandwich enzyme linked immunosorbent assay (ELISA). To the coated microwells pre-

Standard size of envelopes at home and abroad

International envelope standard size

C6 size 162 mm × 114 mm newly added international specifications

B6 size 176 mm × 125 mm is consistent with current size 3 envelope

DL No. 220 mm × 110 mm is consistent with the current No. 5 envelope

ZL 230 m

How to calculate the price of printed matter

At this stage, the requirements of enterprises on the quality of printed products are constantly improving, and the requirements on the scale and equipment of printing companies are becoming more and more strict. Promote the continuous development and maturation of the printing industry. <