The Adjustable Ration Feeder Is Simple To Use Bottle-Top Dispenser

Clean all the apparatus and connect the rubber pipe of the outlet pipe with the outlet curved glass pipe on the bottle cap. The end of the curved glass tube is inserted into the plastic suction nozzle, and then the test fluid is added into the liquid storage bottle. The liquid storage bottle and the liquid filler are screwed tightly with the screw mouth, pumped up and down several times, and then the bubbles in the bottle can be discharged.

Before use, the positioning sleeve is moved to the calibration mark on the positioning stem and fixed according to the amount of liquid needed. Continuous refueling can be carried out. If more precision is needed in the process of use, type 111 can be used on the one hand, and the correct fixed positioning sleeve can be used after the calibration of capacity on the other hand.

The main classification of the instrument
The instrument is divided into two types: internal and external. It uses the plunger of the syringe to carry back and forth. Dynamic and two one-way pistons to make the liquid quantitative, directional motion, to add liquid.

Overview and use
The production of the instrument is based on the same specification of medical syringes as the main body, in the lamp welding with a branch pipe and a single automatic piston, and then with a screw mouth bottle and special plastic cover.

Hawach bottle-top dispenser is suitable for the laboratory of hospital, college, scientific research, etc., to continuously and quantitatively add liquid to all kinds of samples, radioactive isotopes, biological preparations, etc.

modeling
The instrument is divided into two types: internal and external. It is the use of a syringe cylinder plunger reciprocating motion and two one-way pistons liquid quantitative, directional motion, adding liquid. Built-in type; It is composed of a liquid storage bottle and liquid feeder.

The liquid feeder is a plastic screw-mouth bottle cap, in which the syringe of the outlet pipe and the inlet pipe of the one-way piston is continuously installed to control the inlet and outlet of the test fluid. On the top of the bottle cap, there is a metal mark on the positioning stem and movable positioning sleeve to control the exact amount of the test liquid. A glass tube is connected with a plastic tube on the top of the bottle cap to export the test solution. There is a frosted nozzle at the end of the glass bend to connect the plastic straw to control the flow rate.

Method of use
Clean all the instruments, connect the rubber pipe of the outlet pipe and the outlet curved glass pipe to the bottle cap, insert the end of the curved glass pipe into the plastic suction nozzle, then add the test liquid into the liquid storage bottle, use the screw mouth to tighten the liquid storage bottle and the liquid feeder, pump up and down several times, discharge the bubble in the bottle can be used.

Before use, the positioning sleeve is moved to the calibration mark on the positioning stem and fixed according to the amount of liquid needed. It can be carried out continuous refueling, use in the process if more accurate.

The Adjustable Ration Feeder Is Simple To Use Bottle-Top Dispenser

Hawach Pipette: Fast, Convenient Labor-Saving And Safe, Accurate

Fast
In terms of time, according to experimental data, using a pipette is more time-saving than using other measuring instruments (such as glass measuring instruments). For a batch of 30 samples, taking a 10ml single-standard pipette as an example, a glass measuring device takes 20-30 seconds to aspirate the solution, and it takes another 20-30 seconds to discharge the solution. It only takes about 10 seconds to use a pipette to suck and release, which greatly improves the operating speed and work efficiency.

Convenient
In the laboratory monitoring process, it is often necessary to draw a variety of solutions. During the suction process, such as using glassware, it is necessary to draw excess reagents and then slowly release them to the scale. It is often the case that excessive amounts are re-absorbed and then slowly released.

While using a pipette operation, you can adjust the scale of the required range first. Each time you just press the button to the first stop point, then slowly release the button to return to the original point. Then press the button to the first stop point to discharge the liquid, stop for a while and continue to press the button to the second stop point to blow out the residual liquid, and finally release the button. There will be no repeated operations such as the use of glass measuring instruments.

In addition, to accurately draw the same reagent in different volumes, the pipette can choose different ranges, and the glass measuring instrument needs to function with a single standard pipette of several specifications. In use, a pipette can be fitted with multiple tips, which can absorb a variety of different solutions. It is easy to clean and can be sterilized under high temperature or sterilized under ultraviolet light.

Labor-saving and safe
In terms of manpower, the use of a pipette can achieve easy, smooth, and stable pipetting. You can relax your hand at each pipetting gap. This reduces fatigue during repetitive pipetting, provides greater comfort, and reduces the risk of repeated pressure injuries. It is safe to use, and there will be no excessive appearance when absorbing liquid, avoiding the danger of contact with liquid.

Accurate
Generally, a pipette is used to measure a small amount of liquid, which is more accurate than a glass measuring device. The pipette uses a digital window, which is clear and easy to read, eliminating any visual error. As long as it adjusts a range, it can be used multiple times. While using a glass measuring device to measure the same volume of solution multiple times, visual errors will occur.

Hawach Pipette: Fast, Convenient Labor-Saving And Safe, Accurate

Hawach QuEChERS Extraction / Purification Tube AOAC Method

HAWACH is a supplier of advanced laboratory equipment, dedicated to providing sales and services of special applications, and advanced laboratory equipment for sample preparation, gas sampling, water, and soil sampling, laboratory and life science filtration and medical-related products. HAWACH’s philosophy is to provide customers with high-performance instruments, high-quality customized solutions, from sales to rapid customization services.

AOAC method
QuEChERS is a sample preparation method proposed by Anastassiades in 2003. It is now widely used in food, environmental water samples, and soil contaminants; Refer to the AOAC Standard (AOAC Official Method 2007.01 Pesticide Residues in Foods by Acetonitrile Extraction and Partitioning with Magnesium Sulfate), and select QuEChERS according to different samples.

HAWACH -QuEChERS AOAC method

Base material	Sample volume	Extraction solvent	Extraction tube	Purification tube
General fruits and vegetables (Removal of polar organic acids, some sugars, and lipids)	15 g	10 ml 1% Acetonitrile acetate	6 g MgSO4 1.5 g NaOAc Salt pack Salt pack + 50 ml centrifuge tube Salt pack + 50 ml centrifuge tube + homogenous proton	50 mg PSA 150 mg MgSO4 2 ml purification tube 400 mg PSA 1200 mg MgSO4 15 ml purification tube
Fat and waxy fruits and vegetables (Removal of polar organic acids, certain sugars, most lipids, and sterols)	15 g	10 ml 1% Acetonitrile acetate	6 g MgSO4 1.5 g NaOAc Salt pack Salt pack + 50 ml centrifuge tube Salt pack + 50 ml centrifuge tube + homogenous proton	50 mg PSA 50 mg C18 150 mg MgSO4 2 ml purification tube400 mg PSA 400 mg C18 1200 mg MgSO4 15 ml purification tube
Pigmented fruits and vegetables (Removal of polar organic acids, certain sugars, and lipids, as well as carotenoids and chlorophyll)	15 g	10 ml 1% Acetonitrile acetate	6 g MgSO4 1.5 g NaOAc Salt pack Salt pack + 50 ml centrifuge tube Salt pack + 50 ml centrifuge tube + homogenous proton	50 mg PSA 50 mg GCB 150 mg MgSO4 2 ml purification tube400 mg PSA 400 mg GCB 1200 mg MgSO4 15 ml purification tube
Fruits and vegetables containing fats and pigments (Removal of polar organic acids, certain sugars, and lipids, as well as carotenoids and chlorophyll)	15 g	10 ml 1% Acetonitrile acetate	6 g MgSO4 1.5 g NaOAc Salt pack Salt pack + 50 ml centrifuge tube Salt pack + 50 ml centrifuge tube + homogenous proton	50 mg PSA 50 mg C18 50 mg GCB 150 mg MgSO4 2 ml purification tube400 mg PSA 400 mg C18 400 mg GCB 1200 mg MgSO4 15 ml purification tube
Other food methods (Removal of biological matrix interference, including hydrophobic substances and proteins)	15 g	10 ml 1% Acetonitrile acetate	6 g MgSO4 1.5 g NaOAc Salt pack Salt pack + 50 ml centrifuge tube Salt pack + 50 ml centrifuge tube + homogenous proton	25 mg C18 150 mg MgSO4 2 ml purification tube150 mg C18 900 mg MgSO4 15 ml purification tube
All food types (Removal of almost all matrix interferences, including polar organic acids, lipids, sugars, proteins)	15 g	10 ml 1% Acetonitrile acetate	6 g MgSO4 1.5 g NaOAc Salt pack Salt pack + 50 ml centrifuge tube Salt pack + 50 ml centrifuge tube + homogenous proton	50 mg PSA 50 mg C18 7.5 mg GCB 150 mg MgSO4 2 ml purification tube400 mg PSA 400 mg C18 45 mg GCB 1200 mg MgSO4 15 ml purification tube

Hawach QuEChERS Extraction / Purification Tube AOAC Method

Life Added Sugar

Sometimes, we struggled through a tasteless coffee until the last sip and find sugar lying at the bottom. that's life, always sweetened, but sometimes not stirred.

What knowledge do you not know?

W is read from V. W is double V, which should be read as double V. The reason why W is read as double U is because U and V have been indistinguishable for centuries before the 19th century, and are interchangeable. V is both a symbol of V and U, even if it is U, it is often a V, such as upon often spelled vpon. French letters are read like double V /dublə ve/

Professional Performance Of Hawach Sample Vial‎

For the scientists who use the chromatography vials in the lab, the vial might be just is a temporary little container that can hold a sample for a while, and then the sample can be analyzed by chromatography process safely. Yes, it is totally true, but if you choose the right vial and use it properly, you can find it can be a big help for you to get the results from your application as accurately as possible.

You can find Hawach sample vials for HPLC in the group of different diameter and height of the vial. The factors of both clear glass and amber glass are highly inert, but Amber glass can avoid exposure to UV light, and protect the samples which have sensitive nature. The vials are primarily used to inject samples from an autosampler, so the 2 mL vials are used more generally. During the injection process, the autosampler needle can pierce through the cap of the vials and withdraws the sample in the required amount from the sample vials.

From the material in the caps to the high-quality USP1 and Borosilicate glass for the vial, Hawach continuously addresses every detail that can deliver gains for you. You can find a big range of HPLC autosampler vials and the accessories just the right solution to store and protect your samples.

Product Design of Storage Vial
Storage vial is one of the series of Hawach Scientific sample vials. All storage vials，covers and pads provided by Hawach Scientific are certified, and each product is manufactured with a high-quality design, application of professional technology, and strict technical specifications. The unique thread design can guarantee the sealing property, and make it absolutely leak-proof.

Comparative Advantages of Storage Vial
Compared with other storage vials, this vial can also be used for storage purposes at temperatures as low as -100°C. The bottle mouth is 40% larger than the standard narrow mouth sample bottle. The bottle diameter processing is accurate, which makes it is easy to take the lofting product bottle by the manipulator.

Moreover, the strict quality control ensures the size of each batch sample vial, and the marking line with the scale and the optional ceramic writing sign. The storage cap lined with Teflon pads is corrosive to many chemicals, which is a good material for sealing glass. The polypropylene threaded mouth cover with Teflon or silica rubber spacer is very clean to prevent sample contamination.

Professional Performance Of Hawach Sample Vial‎

Cellulose Extraction Thimble And Glass Fiber Extraction Thimble

Soxhlet extraction is widely used in the field of solid-liquid extraction, analyzing fats or pesticides in foods and soil materials and other procedures. Cellulose and glass microfiber extraction thimbles are the key components in Soxhlet extraction, which provide a safe and efficient solvent extraction of solids and semi-solids.

We can find different kinds of extraction thimbles in the market. Which one will fit your need? There are some tips for you to consider if you want to put your Soxhlet extraction into practice.

First, pay attention to the thimble sizes, which should fit the extractors correctly. Remember, when you calculate the external diameters, an extra allowance for wall thickness should be included. When passing through the narrower end of the upper extractor socket, The thimble should have 1-2 mm clearance and should be about 5-10 mm above the level of the top of the siphon tube.

Second, choose the right thimble media. Hawach provides thimble with cellulose or glass microfiber. Thimbles which are made of high-grade cotton cellulose can fit most Soxhlet extraction devices with its smooth interior surface. The high purity glass microfiber thimbles are widely used for high-temperature filtration. The scientists also use them when the solvents are not compatible with cellulose thimbles.
The adaptability of Cellulose Extraction Thimble

Hawach cellulose extraction thimble is a safe, fast, and efficient tool for the extraction of solid and semi-solid substances, especially suitable for the extraction of flammable, toxic, or easily odor-prone solutions. The cellulose extraction thimble is made of high-quality cellulose cotton wool, so it has high purity, high mechanical strength, and good retention effect. The traditional wall thickness of cellulose extraction thimble is about 1 mm, particle retention is 10 um, while the thickness of thickening thimble provided by Hawach is about 2mm, which can greatly improve the retention force and humidity of the sample, but also adapt to dry strength or other requirements.

Measurement of Cellulose Extraction Thimble
Hawach cellulose extraction thimble is commonly used for the separation of components from samples of solids and semisolids. The cellulose extraction thimble provides a safe method of extraction with toxic or other noxious solvents. Hawach cellulose extraction thimble is manufactured from a good-quality alpha cellulose cotton linter for high-performance use in air and waste gas analysis. Double thickness has greatly improved rigidity and satisfied wider application needs. Applications are available in the analysis of oils, fats, organics, pollutants, and additives in rubbers or plastics. What’s more, high purity and binder-free thimbles are offered in different materials. Measurement of cellulose extraction thimble is standard measurements of inner diameter. Outer diameter measurement can be measured by adding twice the wall thickness plus inner diameter.
The adaptability of Glass Fiber Extraction Thimble

Hawach glass fiber extraction thimble is made of 100% pure borosilicate glass fiber, which has high purity, long life, and good sustainability. Hawach glass fiber extraction thimble adds no adhesive or additives, green and environmentally friendly, suitable for use in high temperature or solvent unsuitable for cellulose extraction thimble. Meanwhile, various models and wall thickness are provided, customers can choose needed one according to various applications.

The resistance of Glass fiber Extraction Thimbles
Hawach glass fiber extraction thimble is designed to fit most extraction units with 100% borosilicate glass microfiber. It can be well suited to pollution monitoring and emission control in the analysis of acidic gases. Moreover, it is available in a wide collection of sizes and wall thickness for optimal use in extraction units. Consistent and widely distributed pores guarantee fast flow through and excellent retention ability.

Cellulose Extraction Thimble And Glass Fiber Extraction Thimble