The instruments commonly used for heating in the laboratory include gas lamps, electric furnaces, electric heating plates, heaters, and the like. With the continuous advancement of society, the promotion of laboratory equipment is accelerating, and the laboratories of higher education institutions provide experimental classrooms for teaching experiments as well as scientific research bases. The choice of laboratory equipment is particularly important. Among them, the heater is one of the commonly used equipments in the laboratory. If you want to make a difference in research, you need to choose a suitable laboratory heater. How to choose the most suitable laboratory heater in the face of many heater brands on the market?
First, the choice of a suitable laboratory heater must be aware of the range in which the equipment is used. Normally, laboratory heaters are used for general heating, and for organic synthesis, especially polymerization, higher than the average experimental heating temperature, which requires us to pay attention to the range used when selecting the heater. VELP, Italy, has introduced a series of heaters that can support different ranges of heating. The RC series heaters can achieve a maximum heating temperature of 370 ° C, while the REC heater can heat up to 550 ° C.
Second, the special consideration of selecting a laboratory heater is the temperature uniformity of the heater. The most important parameter is the average temperature of the heater, which means that when the heating temperature is set to show the temperature uniformity of the heater panel temperature distribution, the highest temperature and lowest points of difference, which is measured with the heater panel material An important indicator of the performance of the heating system. The RC series heaters are made of aluminum alloy heating plates, and a special protective layer is applied on the outer surface of the heating plate to make the heat distribution uniform and corrosion resistant. The REC heater is made of white ceramic as a panel and is completely independent. The use process adds safety evaluation.
What you need to know when choosing a laboratory heater is the resolution of the heater, that is, the reading, that is, the temperature display number is accurate to the decimal one, which is an important indicator to measure the display control capability of the heating plate. Generally, the heating plates are all 1, that is, the integer display, and the more precise degree can be accurate to 0.1 °C. The REC heater is a new polymer material that effectively increases the temperature reading and facilitates experimental operation in a wide range of experimental work.
Finally, the sensor temperature is controlled. It refers to the control ability of the heater's internal temperature control system. When the heating panel reaches the error range of the set temperature, it is also one of the important indicators to measure the performance of the heater heating system. In addition to the aluminum alloy heating plate, the RC series heaters are equipped with a temperature control system to achieve good temperature control. The REC heater is a new polymer material and is a white porcelain heater that controls and regulates temperature.
Other general parameters, such as temperature control range, panel size, etc., can be selected according to the specific needs of the experiment, and can be selected by referring to the heater on the market.
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Pain Relief Patch For Neck Shoulder,Lower Back And Leg
Pain Relief Patch for neck shoulder, lower back and leg.
[Name] Medical Cold Patch
[Package Dimension] 10cm×12cm 2pieces/box
The pain relief patch is composed of three layers, namely, backing lining, middle gel and protective film. It is free from pharmacological, immunological or metabolic ingredients.
[Scope of Application] For cold physiotherapy, closed soft tissue only.
[Indications]
The patches give fast acting pain relief for strains, sprains, cramp, bruises, swollen areas or joint stiffness.
[How To Use a Patch]
Tear off the packaging bag and remove the patch. Remove the protective film and apply the patch on the skin. One piece, one time. The curing effect of each piece can last for 8-12 hours.
[Attention]
Do not apply the patch on the problematic skin, such as wounds, eczema, dermatitis,or in the eyes. People allergic to herbs and the pregnant are advised not to use the medication. If swelling or irritation occurs, please stop using and if any of these effects persist or worsen.notify your doctor or pharmacist promptly. Children using the patch must be supervised by adults.
[Storage Conditions]
Store below 30c in a dry place away from heat and direct sunlight.
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