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Hot Air Sterilizers GRX-6,GRX-12,GRX-20

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Dry-Heat Sterilization

In a contemporary lab or medical setting, “dry-heat sterilization” simply means raising the temperature of an item to 170°C under normal air pressure, and holding the load at that temperature for roughly one hour. When you roast a chicken in the oven at 325°F to kill off the naturally occurring bacteria, you are essential “dry-heat sterilizing” your dinner.

Dry-Heat and Steam Sterilizer Efficacy

While both dry-heat sterilization and moist-heat treatment can get similar results with many loads, there are some tasks that are not practical with a steam autoclave. These include loads that are hydrophobic (such as fats and oils) or will be damaged by moisture (such as powders). A dry-heat process is vital for sterilizing instruments that are at risk of corrosion. Dry-heat also works well with glassware.

But dry-heat sterilizers are by no means an all purpose solution. Liquids cannot be dry-heat sterilized (they’ll boil off), nor can laboratory growth media, nor many flammable loads.  Dense loads are also often a problem, as the convection/conduction method used to heat the chamber does a poor job of penetrating them.

“Dry heat is a far less efficient sterilization process than moist heat, but is nevertheless a useful procedure for sterilizing certain products such as powders and oils.”

Dry-Heat Sterilizer VS Steam Autoclave Efficacy

Although many loads could be sterilized by either dry-heat or steam autoclaves, steam sterilization, as a rule, is far less energy and time consumptive than dry-heat methods.

In order to kill the most resistant spores, a dry-heat sterilizer must bring its load to 170°C and hold it at that temperature for one hour. By contrast, a steam autoclave needs only to be raised to 121°C for 15 minutes, because the moisture in the steam is a much more efficient conductor of heat and much more adept at fully permeating a load. Using two thirds the heat for one quarter the time translates into a significant cost savings, not just in the energy bill, but also in terms of productivity and staffing–even in a small facility.

Use Dry or Moist Heat for:

· glassware

· most metal instruments

Dry-Heat Sterilization Only:

· anhydrous fats

· oils

· powders

· metal instruments at risk for corrosion

Steam Sterilization Only:

· culture media

· flammable and heat-sensitive items

· liquids

· dense loads

Feature:


It is to utilize the effects of poisoning caused by oxidation of microorganisms, denaturizing of protein and concentration of electrolyte under high temperature and dry heat, chiefly to destroy the cell protoplasm through oxidation ad thus to kill microorganism, i.e., to kill all microorganism within a certain heating time.

P.I.D. environmental scanning micro-processing controller controls temperature accurately and reliable.

LED display of preset & real temperature.

Safety and convenient: Two sets of completely independent temperature-controlling systems which will suspend automatically as soon as the limited temperature is exceeded, and which have two-stage safeguard each to guarantee the safety of persons and instruments.


Specifications:                    

Model

GRX-6

GRX-12

GRX-20

Internal Dims (WxDxH mm)

408x334x459

552x334x610

610x514x672

Capacity

60 liters

110 liters

210 liters

Temperature Range

50 ~ 250 ℃

Temperature Accuracy

± 0.1 ℃

Temperature Fluctuation

± 1 ℃

Timer

0 to 9999 minutes

Power

1200W

2000W

2400W

Power Supply

AC 220V±10%,50Hz






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