Some Facts You Should Know When Selecting the Bottle-Top Dispensers

Before you select the right bottle-top dispenser for your lab, there are 3 key facts you should know, chemical compatibility, viscosity, and volume. The compatibility of a chemical with a dispenser can be divided into four categories: acids, bases, solvents, and highly corrosive liquids. All models of Hawach bottle-top dispenser are made of the materials which have excellent chemical resistance and can be used very safely.

For viscosity, if the solution is highly viscous with a kinematic viscosity of between 75 and 500 mm2/second, you need to select the bottle-top carefully. Also, you need to pay more attention and pump the dispenser slowly for the applications.

The most popular bottle-top dispensers with an adjustable volume dispenser and you need to select a volume to dispense according to the volume range and the supporting volume increments.

Manual bootle-top dispensers are an excellent tool in the laboratory, but do you know what electric bottle-top dispensers can provide? There are 5 models for use bottle-top dispensers.

Lab Mechanical Bottle-Top Dispensers Mechanical Bottle-Top Dispensers

1. Greatly improved the ergonomic experience

Prolonged pipetting operations are often painful and may even cause repetitive strain injuries. With electric bottle-top dispensers, you no longer need to turn the knob or plunger to adjust the pipetting volume, and you can operate the piston with one key without pressing the plunger. Your thumbs, wrists, and hands will thank you for this!

2. Better precision and accuracy

Electric bottle-top dispensers use a motor to control the movement of the piston, so you can aspirate and dispense a preset volume accurately every time. The pipetting process (including volume and speed) can also be pre-programmed and saved on the bottle-top dispensers so that it can be executed in the same way every time. Since everyone uses the same pipetting procedure, it can greatly reduce human error and avoid differences between operators, so repeatability is better, and better repeatability means better results!

3. One part of the liquid container, four applications

An electric dispenser can complete the work of four different laboratory instruments. Such as standard pipetting, repeated dispensing, dilution, and titration procedures. a. Repeat dispensing mode, instead of repeat dispenser. b. Sample dilution mode, instead of diluter. c. Pipetting mode, instead of manual bottle-top dispensers. d. Manual pipetting mode, instead of the titrator.

Just select the appropriate program, and you can use the same electric bottle-top dispensers to perform the above four applications.

4. Simple and intuitive calibration

The calibration of the electric bottle-top dispensers is simple and fast. You only need to verify the performance of the bottle-top dispensers (for example, through a weight test), and then enter the actual dispensing volume compared to the target dispensing volume, and the bottle-top dispensers will calibrate itself. The built-in calibration reminder function helps to comply with SOP requirements, which is especially important for GLP/GMP laboratories.

In addition, electric bottle-top dispensers can usually replace two manual bottle-top dispensers, because the motor can accurately, precisely, and repeatably control a shorter stroke distance, so it can complete a wider range with better performance pipetting within the measuring range. And if only one bottle-top dispenser needs to be maintained, the corresponding calibration time and cost will be reduced.

5. Simplify the complicated pipetting process

The pre-set program will prompt the user to input basic parameters, such as the volume of the liquid or the number of liquids, which can greatly reduce human error. Many electric bottle-top dispensers also allow users to create step-based custom programs to customize the entire process from start to finish.