MEDIUM - 7281 Annonces

Lundi 24 juin 2019

When using filter paper, we should pay attention to the fact that when the filter paper is not displayed on the paper box of the filter paper, the precipitation should be paid attention to when using the quantitative and qualitative analysis filter papers. (1) Natural filtration is...

Vendredi 21 juin 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...

Jeudi 20 juin 2019

Basic Knowledge of Vacuum Filtration Based on the principle that under the same pressure (vacuum degree), the vaporization temperature of the water is lower than that of oil, scientists make practical equipment which is called vacuum filter. In fact, vacuum filtration is the most...

Jeudi 20 juin 2019

Filter paper has excellent filtration property and strong absorption performance on liquid. Scientific workers use filter paper as a kind of media in analytical laboratories to separate solution from solid. Currently, there are mainly three kinds of filter papers which can be purchased...

Jeudi 20 juin 2019

A filter paper is an effective filter medium and has been widely used in various fields. The technical indicators of a filter papers can be divided into two aspects: one is the filter characteristics and the other is the physical characteristics. Filtration characteristics include permeability...

Mardi 18 juin 2019

1. To save water resources, it is possible to use the glycol-water mixture to carry out circulating refrigeration, strict circulation pipeline design, prevent circulating water pollution, and prolong the use time of circulating water; 2. Original imported compressor, overlapping supercooled...

Mardi 18 juin 2019

After running for a period of time, the normal operation of ultra-low temperature circulating water chiller needs comprehensive maintenance and maintenance. For many enterprises, due to the weak consciousness of daily maintenance, the cryogenic cycle water chiller has been used for...

Mardi 18 juin 2019

Application: The tested object is attached to a test platform adapter. The inside of the part was cooled and heated by an aqueous solution of ethylene glycol. The test component needs to undergo a specific temperature profile and record changes in temperature. Temperature variations...

Mardi 18 juin 2019

Qualitative filter papers usually apply to filter at atmospheric pressure, which uses the ability of the material to remove particles to separate the liquid and solid of the sample. It covers most of the laboratory applications, is used commonly for liquid clarification and, sometimes...

Mardi 18 juin 2019

The primary feature of the vacuum filtration that it uses the classical oil-free pump with sand core filter bottle combination, which is suitable for most Laboratory filtration needs of universal filtering products. The characteristics of this product will be described in detail below...

Vendredi 14 juin 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...

Jeudi 13 juin 2019

Hawach Scientific work for filter paper for more than 16 years, we are happy to see our products exported to the United States, UK, Germany, Dubai, Thailand, South Korea, and other countries. We are not satisfied with our present achievement, this year our R&D department have good news...

Mercredi 12 juin 2019

Hawach introduces pipettes from the pipetting speed of the pipette and precautions during storage. First, the rate of liquid absorption. It is often seen in the laboratory that in order to “improve efficiency”, the user quickly releases the thumb during aspiration, which causes the...

Mercredi 12 juin 2019

- Description of Two Motor Two Legs Electric Height Adjustable Standing Desk： - Two Motors Two Legged Electric Height Adjustable Standing Desk Supported by YND-03 environmental control box, it can be easily moved to the desired height by pressing a button on the controller. The...

Mardi 11 juin 2019

Cellulos e acetate (CA) syringe filters Features: Cellulose acetate (CA) syringe filter has good hydrophilicity, low protein adsorption, and no nitrate. Applications: (1) groundwater filtration; (2) biological and clinical liquid filtration. Mixed cellulose (MCE) syringe filters Features...

Mardi 11 juin 2019

Developed in the 1970s, flash column chromatography is the method of isolating and purifying a component from a mixture by passing the sample through the flash column filled with a gel. The inventors of flash column chromatography were using medium pressure chromatography and short...

Dimanche 09 juin 2019

RISHBIN Light Gauge sheet metal slitter machine for pre-painted/coated coils, max. thickness of up to 3mm, max. width of up to 2200mm, and speed of up to 300 m/min. It consists of Decoiler with coil car, guiding & pinch device, high precision slitters, dual head/quick tooling...

Dimanche 09 juin 2019

RISHBIN Heavy Gauge Slitting line are designed to slit high strength heavy gauge materials. Coils max. thickness of up to 20mm, max. width of up to 2500mm, and speed of up to 60 m/min. It consists of Decoiler with coil car, guiding & pinch device, heavy gauge slitters, dual head/quick...

Dimanche 09 juin 2019

Based on much experiences on providing quality, cost-effective and long lasting roll forming systems Metal steel sheet slitting machine main types: 1. Simple metal slitter 2. Liquid pressure semi-automatic working metal slitter 3. Fully automatic metal slitter Metal steel sheet slitting...

Vendredi 07 juin 2019

- The Main Types and Description of Jaw Crusher: - The Jaw primary crusher is used as Primary and Secondary crushers for crushing all kinds of minerals and rocks with compressive strength less than 320 mpa. There are two types of Jaw crusher: coarse jaw crusher and fine jaw crusher...

Vendredi 07 juin 2019

- The Application and Usage of Impact Crusher: - Impact crusher is suitable for materials whose compressive strength is under 350Mpa, and particle size is less than 500mm.Impact crusher is widely used for sand and rock producing in the industries of roads, railways, reservoir, electricity...

Vendredi 07 juin 2019

Quantité : 4 pcs - Prix : USD 10-470

The JMZ-T series rubber sandwich mounts is the new designed model, which is designed especially for the military use. Comparing with the wire rope isolators, this model is small and tinny, which has no worrying about the space limits. The max static load of the JMZ-T Series anti vibration...

Vendredi 07 juin 2019

Quantité : 4 pcs - Prix : USD 10-470

JMZ-1-1.5A shock isolation mount belongs to the JMZ-1 series. It adopts the structure of double spring and special friction plate. It has good impact resistance and a 1.5kg maximum rated load. It can vibrate isolation in any direction. This type of shock isolation mount has a wide...

Vendredi 07 juin 2019

Vacuum filtration is an operation of evacuating the air below the filter paper to maintain the pressure differential across the filter medium. It increases the rate of filtration through the force on the solution over gravity. When setting vacuum filtration, the first step is fitting...

Vendredi 07 juin 2019

Extraction thimbles are a kind of cylinders used for filtering gas medium or liquid medium, which are divided into three categories in accordance with the material: cellulose, glass fiber and quartz fiber. Cellulose exaction thimbles are mainly used for general Soxhlet extraction...

Vendredi 07 juin 2019

As mentioned before, Hawach Scientific is a dedicated manufacturer who focuses on R&D, manufacture, and marketing of micro-porous filtration and laboratory consumables products under ISO9001 quality management system. Today we'd like to introduce you how to purchase filter paper from Hawach...

Jeudi 06 juin 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...

Mercredi 05 juin 2019

A diaphragm vacuum pump is mainly used in the fields of medical and pharmaceutical product analysis, fine chemicals, biochemical pharmacy, food inspection, public security criminal investigation technology, etc. The advantages of a diaphragm vacuum pumps 1. Advanced design and technique...

Mercredi 05 juin 2019

The 1050 aluminum plate contains more than 99.5% aluminum and is one of industrial pure aluminum. The 1050 aluminum plate has high plasticity, corrosion resistance, electrical conductivity and thermal conductivity, but its strength is low hig h plasticity. The 105 0 aluminum sheet...

Vendredi 31 mai 2019

Quantité : 1 - Prix : USD500

High Temperature Heat Pump Features High temperature air source heat pump is the heat pump which can reach more than 85°C, while the heat pump with the temperature of 65°C is called medium temperature heat pump or middle temperature heat pump. The high temperature air source heat...