SAMPLES - 8638 Annonces

Vendredi 13 décembre 2019

Known as surface filtration, membrane filtration is a process that the solid particles can be separated through a very thin filter medium. The particles are usually larger than the pore size of the membrane. During separation, a semi-permeable membrane acts as a selective barrier...

Vendredi 13 décembre 2019

During the sample pre-treatment process, except for the selection of SPE cartridge sizes, there are still several factors that should be carefully considered. Specification of SPE Cartridge The first important factor to select an SPE cartridge is the filler. The principle is to ensure...

Vendredi 13 décembre 2019

What is vacuum filtration? Vacuum filtration forms negative pressure in the filtrate outlet as the power of filtration. This kind of filtration machine is split into batch operation and continuous operation. Vacuum filtration equipment with batch operation can filter suspension liquid...

Vendredi 13 décembre 2019

In order to prolong the service life and obtain the best performance, there are some instructions to follow. It is better to spray the filter paper with water before using, because the dry filter paper has poor filtration effect and is easily been sucked away by the filter paper,...

Jeudi 12 décembre 2019

QuEChERS is a streamlined technique that makes it easier and cheaper for analytical chemists to examine the pesticide residues in agricultural products. It is exploited by many professors of the American Ministry of Agriculture in 2003, especially Anastassiades. This technique shares...

Jeudi 12 décembre 2019

Hawach sample vials are available with three types: screw top, crimp the top and snap top sample vials. Reducing the possibility of sample evaporation, crimp caps provide the tightest seal. Compared to crimp tops, snap top sample vials can be applied and removed by hand more easily...

Jeudi 12 décembre 2019

As a unique chromatography technique that pushes solvent through the column uses by compressed gas or a pump, flash column chromatography is highly appreciated as an advance technique because it makes flow rates of the solvent much faster than the gravity flow. Developed in the 1970's...

Jeudi 12 décembre 2019

Because the cotton fiber in the filter paper has a good affinity with water, it can absorb about 22 percent of the water, in the form of a hydrogen bond with cellulose water has 6 to 7 percent. In general, it is very difficult to remove. Compared with the affinity with water, the...

Mercredi 11 décembre 2019

The filter capsule is also called the submerged filter, it uses a folding membrane with a large filter surface area. It is suitable for the filtration of a large volume of solution. The shell of the filter capsule is made of polypropylene and does not contain any adhesives and other chemicals...

Mercredi 11 décembre 2019

Syringe filters are used in a wide range of laboratories to provide fast and efficient water and organic solution filtration solutions. It is made from a variety of membrane filters containing polypropylene housings, and special injection molding processes increase burst pressure...

Mercredi 11 décembre 2019

Flow Process of HPLC column First, the solvent in the storage bottle is pumped into the chromatographic system by pump and then output, and then introduced into the sampler after flow and pressure measurement. Second, object to be tested is injected by the sampler, passes through...

Mardi 10 décembre 2019

Quantité : 1L - Prix : 7 $ - 9.50 $

Huile d'olive extra vierge neuve disponible pour le marché d'exportation. Expédition en bouteille, marque déposé, emballage personnalisée à votre demande ou en VRAC. Produits certifiés avec possibilité d'expédier des échantillons gratuits dans le monde entier. N'hésitez pas à nous...

Mardi 10 décembre 2019

Filter housing supplied by Hawach Scientific is cost-effective that is both durable and reliable. It is fabricated using sturdy and high-grade materials to make it even more demanding. The possibility of contamination is avoided with the fluid traveling in different layers. Besides...

Mardi 10 décembre 2019

Nylon membrane filters are suitable for use with high PH samples; PES membranes filters are fit for filtration of compatible organic solvents and aqueous samples; PP membrane filters are widely used in analytical and research applications for the pharmaceutical, environmental, biotechnological...

Mardi 10 décembre 2019

The protective HPLC columns influence the separation result. First of all, the protective column has a good positive effect on the experiments. Even if the stationary phase is chosen incorrectly, the protective column can also be effective for separation. The protective column is...

Mardi 10 décembre 2019

To select the appropriate SPE cartridge, we normally consider it from two aspects: the selection of adsorbent and specification of the cartridge. The use of appropriate adsorbent can achieve good separation between interfering substance and target component, and also meet the requirement...

Mardi 10 décembre 2019

Due to the variety of targets, large structural differences, and low target content, the detection of pesticide residue method requires being accurate, rapid, sensitive, simple and low cost. The QuEChERS method is more and more widely used in pesticide residue detection, as it is green and quick...

Lundi 09 décembre 2019

During extraction, the sample to be tested is placed in the cellulose extraction thimble and put into the extraction tube. Petroleum ether was added into the extraction bottle, heated the extraction bottle, and petroleum ether was gasified. It rose into the condenser from the connecting tube...

Lundi 09 décembre 2019

Pipette tips supplied by Hawach Scientific fit for wide applications and sample handling with superior performance. It is made from non-sterile PP material in a fully automated and clean room facility, which can assure excellent clarity and flexibility for accurate analysis results...

Lundi 09 décembre 2019

SPE cartridge A solid-phase extraction device is a physical extraction process involving a liquid phase and a solid phase. In the solid-phase extraction process, the adsorption of the solid relative analyte is greater than that of the sample mother liquor. When the sample passes through...

Lundi 09 décembre 2019

The working principle of the pipette is that the piston moves through the telescopic movement of the spring to achieve aspiration and discharge. Under the push of the piston, part of the air is exhausted, and the liquid is sucked in at atmospheric pressure, and then the air is pushed...

Mercredi 04 décembre 2019

Quantité : 500 Kg - Prix : 400 €/kg FOB Entebbe

Nous vendons de la vanille d'Ouganda gourmet, certifiée bio et récoltée au 3èe trim. 2019. Spécifications : - Taux vanilline 2.4 % - Degré d'humidité : 30.4 % Certificat d'analyse et/ou échantillon sur demande. Qté disponible 500 Kg - Commande minimum : 50 Kg – Qté plus importante...

Vendredi 29 novembre 2019

Quantité : 100000pcs/ - Prix : 1.5-8.8usd

STRENGTHENING & PAIN RELIEF: Improves muscle performance and tone by involving core, back, and leg muscles. DURABLE & SAFE: Made of high quality sturdy and durable rubber material. Spiky dimples on one side (for standing), small dimples on the reverse side (for sitting). Designed...

Jeudi 28 novembre 2019

Quantité : 100000pcs/ - Prix : 0.8-3.7usd

Cosmetic High Quality Eco Friendly Paper Eyeshadow Packaging Box Product List Paper eyeshadow packaging is our typical product. Product name Eyeshadow Packaging Box Size L18*W8*H2cm Accept Customization Color Gray Shape Round Shape Industrial Use Cosmetic Box Usage StorageEyeshadow...

Mardi 26 novembre 2019

Quantité : 1000 - Prix : 100,00 €

Propriété physique du caoutchouc soumis à un essai de vieillissement accéléré à l'air chaud (condition d'essai: 50 ° C * 96h). Classe Solution de rubber conveyor belt concentration de la condition couverte Le taux de changement avant et après la couverture Taux de changement d'intensité...

Mardi 26 novembre 2019

Plastic Spray Bottles Description: The bottle is made of food grade PET. PET plastic has a highly symmetrical molecular structure and a certain crystallization orientation ability, so it has a high film-forming and formation.PET plastics have good optical properties and weather resistance...

Mardi 26 novembre 2019

Plastic Foam Pump Bottles Description: The bottle is made of food-grade Pet highly crystallized polymer.Pump sprayer cap is made of pp material. It is odorless, tasteless, non-toxic, white and translucent plastics. Its chemical properties are also very stable highly crystalline polymer...

Mardi 26 novembre 2019

We have empty shampoo bottles for sale! Plastic Bottles Shampoo Description: Transparent PET boston round bottles include blue disc top caps for easy dispensing of various products. The transparent PET is vibrant and also provides multiple barriers to storage of your products with ease...

Mardi 26 novembre 2019

Nose Spray Bottles Description: Specially designed for patients with rhinitis nasal spray bottle, elongated caps drugs can be directly sent to the depths of the nose, to achieve better efficacy, classic cylindrical bottle modeling, plus the transparent bottle cover effectively cut...

Mardi 26 novembre 2019

MiniBottles Empty Plastic Bottles Description: The classic cylindricalbottle is made of food grade Pet, which is safer and more reliable.T he bottle Cap is made of Screw Cap, which is connected more tightly, ensuring that the bottle does not leak and the smallmouth is designed to...