Description
* Advanced microprocessor controlling system guarantees the reliability and temperature stability
* Bright and clear LED digital display and setting for the working temperature, stirring speed, working time, and safety
temperature
* Memory function for stirring speed and setting temperature, convenient for experiments with fixed conditions
* Liquid drainage above the control board to prevent liquids from accessing the system
* Direct connection for Pt100 temperature sensor for convenient solution temperature control
* Sealed outer shell and isolated critical parts design for enhanced longevity even in a harsh laboratory environment
* When the temperature of the top plate is above 60℃ , hot-top indicator will light up for the user's safety protection

PLUS serial - Advantages and Applications
* Anti-corrosion top late is easy to clean, can stand for high temperature
* Ceramic coated stainless steel top plate is suitable for relatively mild heating, good for small amount sample or a relatively
low temperature for large volume sample
* WH420 with four positons and WH620 with six positions, each of them can be controlled separetely
* Both of WH420 and WH620 have the timer function

Specifications

Model	WH420	WH620
Display Mode	LED	LED
Top Plate Temperature Range (℃ )	50~300	50~300
Solvent Temperature (Pt100 sensor)(℃ )	40~300	40~300
Temperature Stability (Pt100sensor)(℃ )	±2	±2
Safety Temp. (℃ )	350	350
Rotating Speed (rpm)	150~1500	150~1500
Heating Capacity (W)	1000	1000
Max. Capacity (L)H2O	4*2	6*2
Top Plate Material	Aluminum coated with ceramic	Aluminum coated with ceramic
Timer（min）	yes	yes
Number of stirring positions	4	6
PID Parameters	1 set of PID	1 set of PID
Interface	RS232	RS232
High Temperature Protection △ T(℃ )	--	--
Top Plate Dimensions（mm）	320x320	400x300
Dimensions (mm)	380x320x70	490x320x70
Order No.	400315	400316

 

 

Wiggens is a manufacturer of high quality laboratory equipment based in Beijing, China. We started out as distributor for laboratory equipment and soon became an exclusive distributor for most reputable lab equipment manufacturers. After being established as a well-respected and highly successful distributor all around China, we made the successful transition from a mere distributor to producing high level laboratory equipment itself.

Since 2006 we produce top-quality laboratory equipment and, by making use of our well- established distribution network, we were able to quickly establish our products in the domestic market.

Our two brands Wiggens and ChemVak stand for high quality, long durability, and remarkable performance.

Wiggens is your general laboratory companion and provides products that can be used in all kinds of laboratory environments. The Wiggens product range entails different kinds of magnetic stirrers and hot plates. It even provides hot plates with integrated stirring functions for an even heat distribution among your solvents. In addition to the magnetic stirrers Wiggens also provides overhead stirrers with diverse characteristics to perfectly match the solvent used. In addition, Wiggens offers homogenizers of different magnitudes as well as a broad range of shakers, multi- purpose heaters and colony counters. As a new feature in the 2014 range Wiggens now also provides incubators and water baths for full temperature control.

ChemVak on the other hand has been created as a brand specialized in vacuum equipment. Different kinds of vacuum pumps, including chemical-resistant diaphragm pumps and oil-free piston pumps, are complemented by vacuum filtration equipment to form whole filtration systems for a wide range of different applications. In addition, Water-jet aspirator pumps and bio-suction systems are part of the product range. In 2014, a new line of gas generators became part of the ChemVak product line and round out the picture of ChemVak as a specialist for vacuum and gas related operations.