Chromatographic pump maintenance knowledge

To maintain good pump performance, the system must be clean, solvent and reagent quality guaranteed, and the mobile phase filtered and degassed. Here are a few precautions to prevent pump failure: 1. High quality reagents and HPLC grade Solvent; 2, filter the mobile phase and solvent; 3, degassing; 4, venting exhaust air every day when the start of use, washing away the buffer solution from the pump after the work; 5, do not let water or corrosive solvents remain in the pump; , Regular replacement of gaskets; 7, when necessary, add lubricants; 8, consult the pump operation manual for other suggestions. Pumps in good working order should be able to stabilize the baseline on the chromatogram; reproducibility of retention time is good. Fluctuations in isocratic elution are less than 2%. Gradient elution pressure changes should be slow and steady. In order to rule out the failure as soon as possible after the failure, usually should be standing seal, check valve (inlet and outlet), pump head device, all kinds of fittings, fuses and other components, and replacement tools.

Herringbone Spc Flooring

Name :4-7mm herringbone Vinyl flooring (spc flooring,click spc flooring)
Board Thickness : 4.0-7.0mm
Wearing Layer Thickness :0.3mm,0.5mm as regular
Surface Texture :Deep Grain,Wood Grain,Marble Grain,Stone,Carpet
Finish :UV-Coating
Installation :Click system(Unilin,Valinge)
Delivery Time :15-25 days
Size:648mm*108mm
Backing Foam :IXPE(1.0mm,1.5mm,2.0mm) EVA(1.0mm,1.5mm)
Density :2.07kg/m3
Surface :Wood Embossed,Deep Wood Embossed,Handscraped,Eir.
Usage :Bedroom,Kitchen,Basements,Home,School,Hospital,Mall,Commercial to use.
Features :Waterproof,Wear resistant,Anti-slip,Moisture Proof,Fireproof,durable, anti-scratch, anti-bacterail.

Market :Export to American,Canadian,European Market,Part Asia,Africa Countries.Australia Market

Warranty :10 years for commercial and 25 years for residential

Stone Plastic Composite vinyl flooring is more and more popular new style eco-friendly vinyl flooring. SPC rigid flooring is set apart from other types of vinyl flooring by its uniquely resilient core layer. This core is made from a combination of natural limestone powder, polyvinyl chloride and some stabilizers.
SPC vinyl is a luxury vinyl flooring option with a structurally rigid, 100% waterproof core. SPC is also known as rigid core vinyl, and we use these terms interchangeably. Rigid core engineered vinyl flooring is designed to look like wood or stone, but requires less upkeep.
This flooring is durable, waterproof, and perfect for DIY installation. It`s ideal for both home and commercial areas.

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JIANGSU PERFECT NEW MATERIAL TECHNOLOGY CO., LTD. , https://www.bffloor.com