Advantages of dry heat sterilization are that it's inexpensive, it doesn't pollute or cause toxic fumes, and it doesn't corrode or rust metal objects. Disadvantages are that it's relatively slow and that many objects can't withstand the high temperatures.
Sterilization is permanent.
Sterilization is meant to be permanent. Getting a sterilization reversed is really expensive, complicated, and it doesn't always work — your fertility may never come back. You should only get sterilized if you're totally certain you never want to get pregnant for the rest of your life.
The reasons a sterilizer may not sterilize the load are many: improper loading (e.g. covering the drain port, overpacking), steam dryness, component failure, insufficient steam, wrong cycle type, user error, etc. The best way to ensure proper sterilization is to validate the unit using a biological indicator (BI).
Possible Drawbacks of Heat Treatment
Possible warping or cracking: If the metal is heated too quickly, it can cause major warping and cracking issues that may require further processing or additional repairs.
Advantages and disadvantages
They can be more rapid than an autoclave and higher temperatures can be reached compared to other means. As they use dry heat instead of moist heat, some pathogens like prions, may not be killed by them every time, based on the principle of thermal inactivation by oxidation.
Analyzing the failures in the heat treatment is fundamental to ensure the efficiency of the production process and is indispensable to guarantee the quality of the parts. Breakage, cracking, tension, granulation, and separation are just some of the unwanted effects of heat treatment on metals and other materials.
Increased swelling and inflammation.
Heat therapy is not recommended immediately after physical activity, after injury, or during an infection. The heat will worsen pain and prolong healing if used when the tissues are damaged or infected.
Austenitics Refuse Heat Treatment
Tough and malleable, there's just one problem that prevents the alloy from being an all-around winner: austenitic stainless steels cannot experience conventional heat treatment procedures.
The advantage of this technique is that it is simple in use, effective, easy to control, and cost effective. However, the application field is limited to packages consisting of heat sensitive materials.
Sterilization failures
Incorrect operation of the sterilizer. Improper loading or overloading of the sterilizer. Improper packaging. Improper packaging material selected for the method of sterilization.
Sterilisation is more than 99% effective, and only 1 in 200 people will become pregnant in their lifetime after having it done. It does not protect you against sexually transmitted infections (STIs). Sterilisation is usually a permanent method of contraception. Reversing it isn't easy, and is not available on the NHS.
Of all the methods available for sterilization, moist heat in the form of saturated steam under pressure is the most widely used and the most dependable. Steam sterilization is nontoxic, inexpensive 826, rapidly microbicidal, sporicidal, and rapidly heats and penetrates fabrics (Table 6) 827.
Treatment of pain through heat therapy also has its share of side effects like skin discoloration, and the formation of blisters on the skin. The side effects arise in heat therapy when the patient makes use of hot temperatures in place of warm temperatures.
“For any acute injuries such as muscle sprains, strains, knee injuries, fractures or dislocations, heat therapy is not advised,” shares Dr. Rama. Similarly to cold therapy, heat therapy should also never be applied to open wounds and patients with circulatory problems should avoid, as well.
Heat is an important environmental and occupational health hazard. Heat stress is the leading cause of weather-related deaths and can exacerbate underlying illnesses including cardiovascular disease, diabetes, mental health, asthma, and can increase the risk of accidents and transmission of some infectious diseases.
Heat therapy should not be used for acute injuries, such as sprains or strains, as it can increase swelling. Risk of burns: Heat therapy can cause burns if the temperature is too high or if applied for too long.
Heat-Sensitive Materials: As mentioned earlier, sensitive items like candles, waxy material, pictures, and oil paintings can be damaged by the high temperatures used during heat treatments. Removing these items from the treated area is essential.
Dry-Heat Sterilizers
The disadvantages for dry heat are the slow rate of heat penetration and microbial killing makes this a time-consuming method.
The commonly-used temperatures and time that hot air ovens need to sterilize materials is 170 degrees Celsius for 30 minutes, 160 degrees Celsius for 60 minutes, and 150 degrees Celsius for 150 minutes.
Two types of dry heat sterilizers exist—static air and forced air.
Following are the disadvantages of the heating effect of current: 1) When an electrical current flows through the conductor, a neighborhood of it's converted into heat. This is often a waste of energy. 2) the warmth produced can damage the insulation and other electrical components, or maybe cause a fireplace.