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Thursday, July 04, 2019

The filler of polymeric HLB SPE cartridges produced by a special copolymerization technology contains a certain proportion of the hydrophilic group and the hydrophobic group. Hydrophobic divinyl benzene structures retain nonpolar compounds and hydrophilic n-vinyl pyrrolidone structures...

Thursday, July 04, 2019

Activation, also known as solvation, add a suitable solvent to expand the functional groups on the adsorbent and remove possible interferences on the adsorbent. Equilibrium, remove the activated solvent to create a suitable solvent environment for sampling. Usually, use the same solvent...

Thursday, July 04, 2019

As an acronym for Quick, Easy, Cheap, Effective, Rugged and Safe, the method of QuEChERS achieves as a variety of sample preparation and clean-up techniques for the analysis of multiple pesticide residues in the field of agriculture. Originally designed for the analysis of fruits and vegetables...

Wednesday, July 03, 2019

Flash column chromatography is an efficient way to separate complex mixtures of compounds in the lab. we use compressed air to push the solvent through the column when we are running flash columns. It can help provide better separation and cut down the running time as while. Flash...

Tuesday, July 02, 2019

The average sample addition recovery rate of QuEChERS method is higher than 85%, with fewer impurities interfering with the detection of the target substance, a small amount of solvent, simple and fast operation, which will be the preferred pretreatment method for routine detection...

Monday, July 01, 2019

- Low VOC Silicone Modified Polyurethane Conformal Coating - L325 - - FEATURES OF GOLOHO-L325 - ·Convenient to use: organic silicon modified polyurethane type, good waterproof, easy to repair. ·Neutral, no corrosion for many metals, anti-yellowing. Outstanding bond strength for...

Monday, July 01, 2019

After selecting the type of SPE cartridges, we have to determine the specifications of the SPE cartridge. The principle of selecting the SPE cartridge specification is to first ensure that the SPE cartridge packing has sufficient capacity to retain the target compound 100% on the column...

Friday, June 21, 2019

Flash chromatographic column, also called rapid chromatographic column(rapid column crossing, which means gradient elution, decompression or pressurization of the column), medium pressure chromatographic column（for example, rapid elution is achieved by pressurizing with nitrogen and...

Friday, June 21, 2019

Normally SPE cartridge has two basic adsorption modes: target compound adsorption mode, impurity adsorption mode; 5 operation modes: gravity operation, manual positive pressure, centrifuge, negative pressure and positive pressure mode. Now let's review the whole process step by step...

Wednesday, June 19, 2019

Take the example of pear test to check whether a pear is up to the standard. Prepare the environment The first step: Suitable Acetonitrile salting-out extraction environment was prepared. Make the pears into a puree, take 10g to QuEChERS centrifuge tube of 50ml. Add extract solution...

Wednesday, June 19, 2019

SPE cartridges, with a full name of Solid Phase extraction cartridges, is also called the SPE column( solid phase extraction column). The solid phase extraction column/cartridges is a pretreatment device for the sample being analyzed, which developed from the chromatographic column...

Tuesday, June 18, 2019

A more efficient way to extract compounds from solid materials—Soxhlet extraction (also known as sand extraction). In the laboratory, Soxhlet extractor uses solvent reflux and siphon principle, so that the solid substance is continuously extracted by pure solvent, which saves solvent...

Saturday, June 15, 2019

- Technical Applications - Yiheda Automation R & D team can provide you with professional solutions, we have developed many machines for different industries, such as automatic assembly, automatic welding, visual inspection, laser marking, robot integeration, recording and traceability...

Saturday, June 15, 2019

What is SPE Cartridge? The term SPE cartridges is short for Solid Phase Extraction cartridge. It is a kind of sample preprocessing equipment (extract, separate and concentrate) which is developed from the chromatographic column. SPE cartridge is mainly used for preprocessing of the...

Friday, June 14, 2019

Quantity : 1000 - Price : 1 000,00 €

Huatai Industrial (Hong Kong) Co., Ltd. is a professional manufacturer of all kinds of rubber seals, cylinders, cylinder seals, mechanical seals, rubber molds, hardware and other products. Our products use imported rubber compounds, such as NBR-JSR-BAYER, EP35 / EP48 EPDM rubber,...

Friday, June 14, 2019

As a simple and fast absorption chromatography technique for the routine purification of organic compounds, flash chromatography is developed for the daily purification of reaction products in the lab, which is low costs and achieves separations of samples (0.01-10.0 g weight) in short time...

Friday, June 14, 2019

Hawach introduced the properties and application range of HPLC column stationary phase in the silica gel matrix. Silica gel matrix: Silica gel, weakly acidic, has a strong memory, used to separate non-polar, weakly acidic compounds, oils, etc.; C18, a silica-based uncapped reversed-phase...

Thursday, June 13, 2019

NH2 HPLC columns can be used in the positive phase or in the negative phase, but it should be noted that the positive phase solvent and the negative phase solvent are usually not mutually soluble. New NH2 HPLC columns are preserved in the positive phase environment under normal circumstances...

Tuesday, June 11, 2019

Solid phase extraction (SPE) is a separation process by which compound that is dissolved or suspended in a liquid mixture, thereby being separated from other compounds in the mixture according to their physical and chemical properties. There are 4 general functions as below: 1.Matrix...

Thursday, June 06, 2019

The fast liquid chromatography column optimization function, or “GO” function, converts the linear gradient into a step gradient and optimizes the elution conditions near the confirmed elution peak. First, purify a small portion of the sample with a small column and wait until the...

Wednesday, June 05, 2019

Extraction thimble sizes should be decided as per users' specific applications. Every single size represents the particular practice of displaying the internal diameter and general length of the thimble in millimeters. Thus the extra allowance for the thickness of the thimble wall...

Wednesday, June 05, 2019

Here we talk about the following four kinds of common filter papers about their constitution and characteristic that we can distinguish them. The first one is PP filter paper. PP filter paper is made from polypropylene as the raw material through a proprietary hot melt process, which...

Thursday, May 30, 2019

Overview The HPL panel (High-pressure laminate) 4 mm thick is a solid compound consisting of more than 40 layers of paper impregnated with melamine and phenolic resins. The sheet of HPL, measuring 1300x3050 mm, has a transparent finishing layer on both external sides that protects...

Tuesday, May 28, 2019

- Bopp Bags - We are professionally on manufacturing Multicolor Printed BOPP Laminated PP Woven Bags which are precision produced by quality pp material that offers outstanding usage value. BOPP bags are new, advanced and attractive type of bulk packages from 5 kgs to 100 kgs. BOPP...

Tuesday, May 28, 2019

- Rice Bags - Rice bags are divided into vacuum packages and non-vacuum packages. Most part of non vacuum rice bags are made of polypropylene material, either of nature pp woven fabric or with BOPP film Laminated. Mornpackaging offers both pp woven bags and BOPP bags for rice packing...

Wednesday, May 22, 2019

Quantity : 1 - Price : 8000-15000$

R9 cabinet atc cnc router Furniture Product Description Free Shipping! 12 Tool CNC Rotary Carousel 1325 1530 2030 2040 4*8ft 5*10ft Wood MDF Cabinet Making ATC CNC Router Machine Product Application: * Furniture: wooden doors, cabinets, plate, office and wood furniture, tables, chair...

Wednesday, May 22, 2019

Quantity : 1 - Price : 8000-15000$

CNC Router Machine Price with ATC Tool Changer R4 Product Description German Siemens controller Siemens servo motor 4 tools top quality ATC cnc router for wood aluminum mdf plastic cutting milling Product Application: * Furniture: wooden doors, cabinets, plate, office and wood furniture...

Wednesday, May 22, 2019

Quantity : 1 - Price : 5000-10000$

Three spindle wood engraving machine Product Description German Siemens controller Siemens servo motor 3 tools top quality ATC cnc router for wood aluminum mdf plastic cutting milling Product Application: * Furniture: wooden doors, cabinets, plate, office and wood furniture, tables...

Wednesday, May 22, 2019

Quantity : 1 - Price : 2500-4000$

wood engraving machine price 1325 Product Description router cnc 1325 low price machine cnc router carving machine for wood furniture Product Application: * Furniture: wooden doors, cabinets, plate, office and wood furniture, tables, chair, doors and windows. * The wood products: voice box...

Monday, May 20, 2019

Common Electronic And Mechanical Connections, Offer Customized Types Brass shell additional EPDM Seal Ring, optional IP65 and IP67 Ingress protection, applied to measure and control air condition or air condition system pressure Typical Feature - Stainless-steel pressure connection...