T he need for proper sterilization in dental offices is imperative as the instruments and tools used by doctors during extractions and other procedures need to be thoroughly cleaned when changing patients. Otherwise, infections, dangerous germs, and health issues are transferred from patient to patient, in old times when disinfection of dental instruments was not up to standards diseases like HIV and Hepatitis spreading rapidly as a result of this poor practice at the dentists’ office. However, with modern sterilization chambers, this is not a peril for patients anymore as in a matter of minutes all of the tools that have been used are cleaned to perfection.

Top 5 Autoclaves Comparison

1. Tuttnauer 1730 Valueklave 2. East Dental Full Automatic Medica 18L 3. Prestige Classic 2100 Electric Sterilizer 4. Zgood ZG-8L250 5. Aphrodite 24851
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General Info
Manufacturer Tuttnauer ZZLinker Prestige Medical U.K. Zgood Aphrodite
Dimensions 17.9″ x 17.4″ x 12″ 23.6″ x 15.4″ x 14.2″ 13.2″ x 13.4″ 22.8″ x 15.4″ x 14.2″ 22.05″ x 13.8″ x 19.7″
Weight 55 Lbs 55.1 Lbs 9.9 Lbs N/A 39.7 Lbs
Maximum Instrument Size 11.5″ ≈ 10″ 9″ ≈ 10″ N/A
Technical Ratings
Voltage 120V 110V 120V 110V/220V 110V/220V
Frequency 50/60 Hz 50/60 Hz 50/60 Hz 50/60 Hz 50 Hz
Power 1350W 1000W 1500W 900W 1500W
Current 11A 9A 7A 8A/4A N/A
Unwrapped Cycle Time
Cold 16 Minutes 25 Minutes 25 Minutes 25 Minutes 25 Minutes
Hot 11 Minutes 6 Minutes 11 Minutes 6 Minutes 6 Minutes
Dimensions (Ø x L) 7″ x 13″ 9.85″ x 13.8″ 8.3″ x 9.3″ 9.85″ x 13.8″ N/A
Volume 2 Gallons 4.75 Gallons 6.6 Gallons 2.1 Gallons 6.3 Gallons
Number of Trays 3 3 2 2 3
Dimensions (D x W x H) 11.6″ x 4.7″ x 0.8″ 10″ x 7.1″ x 0.79″ N/A N/A 13.4″ x 7.9″ x 1.2″
Material 304 Stainless Steel Stainless Steel Stainless Steel 304 Stainless Steel 304 Stainless Steel
Maximum Working Temperature 273°F 273.2°F 255.2°F 273.2°F 273.2°F
Maximum Working Pressure 30 PSI 33 PSI 32 PSI 31.9 PSI 34 PSI
Automatic Shut-Off
Fast Sterilizing Cycle
Safety Features
Double Locking Overtemperature Protection System Mechanical Interlock System Overheating Protection Safety Valve
Overheat Cutoff Door Safety Switch Electronic Detectors Safety Valve Over-Current Protection
Dual Safety Thermostat Gasket Offset Water-Off Protection
Thermal Fuse Over-Temperature Protection
Other Features/Traits
Heat Insulation LED Display Light Sequence Indicators Chip Control Temperature Adjustment ≤ ± 1℃ Heat Average
Quiet Operation Automatic Supply Water System 1-Step Operation 60-Minute Timer
Front Drain Valve Pressure Adjustment Application Specific Integrated Circuit
No Dry Function Top-Loading Design
Product Warranty 1 Year N/A 2 Years N/A N/A
User Manual
Customer Support

Instrument Sterilizers Reviews

1. Tuttnauer 1730 Valueklave

As it measures 17.9 inches by 17.4 inches by 12 inches, you can rest assured knowing that all of your instruments will fit inside it perfectly. When empty, it weighs 55 pounds, so you won’t have trouble relocating it when needed. The maximum size of instruments you can place inside it is 11.5 inches in length, which is a lot more than what most machines on the market offer. As it boasts a power rating of 1350 watts, it won’t raise the bills excessively. It boasts a quiet operation which ensures that you can be in the same room with it, taking care of patients without being bothered by it. Another mention-worthy aspect is the fact that a 1-year warranty is provided by the manufacturing company.


What we can assure you of is that not a lot of time is lost on the operation of the machine when it is sterilizing the tools you place inside it, regardless what operating mode you select. There are two basic sterilizing cycles put at your disposal, a hot one, and a cold one. The cold cycle lasts approximately 25 minutes, while the hot one lasts 11 minutes.

Trays and Chamber

It features 3 trays where you can conveniently place your instruments, trays that are made with 304 stainless steel to ensure a clean and safe surface for your tools to sit on. Each tool measures 11.6 inches by 4.7 inches by 0.8 inches, so room won’t be an issue to worry about. When it comes to the chamber, know that it has a 2-gallon volume that is pretty standard with these machines, and it measures 7 inches by 13 inches.

Mention Worthy Features and Specs
  • Front drain valve ensures a quick and easy method of disposing of the water in the reservoir.
  • As the chamber and the door are made with 316L grade stainless steel with electro-polish finish, a long lifespan for the tool is ensured.
  • Backed by international certifications that ensures this is a qualitative, safe medical tool.
Safety Considerations

Safety in use is primordial with any medical tool, and the fact that this product comes with everything needed to ensure safety in use and the protection of the machine in the long run, it makes for a smart acquisition. It features a double safety locking device that ensures the door will never open when the chamber is pressurized. At the end of the sterilization and dry cycles, it turns off on its own. Overheating is an occurrence you never need to worry about as it automatically turns off when there is insufficient water in the chamber to prevent this from happening. Additionally, there’s a dual safety thermostat set in place which helps prevent overheating as well.

  • You can place 11.5-inch long instruments inside the chamber for sterilization
  • Offers a quick 11-minute cycle you can use when you are in a hurry
  • Comes with 3 stainless steel trays where you can place your instruments
  • It can reach a maximum working temperature of 273°F
  • Overheat cutoff prevents damage to the machine by stopping the operation in case there in not enough water inside the chamber
  • On the heavy side – 55-pound weight makes it uncomfortable to have to move the machine around too often

Dependable and built with versatility in mind, the 1730 from Tuttnauer is sure to effortlessly sterilize all of your lab instruments and other equipment which you intend to clean in order to reuse. It might be a costly investment upfront, but considering that it is built to last for many years and that it actually spares you of making other purchases, you will actually end up saving money in the long run.

2. East Dental Full Automatic Medica 18L

Let us begin the review by highlighting the spacious design of this machine as it measures 23.6 inches by 15.4 inches by 14.2 inches. If you have space for it in your cabinet, we recommend you use it to sterilize your instruments as it is capable of reaching a maximum working temperature of 273°F that ensures any and all bacteria and germs will be destroyed. In terms of interior space, it is hard to top this selection as it allows you to place instruments that measure up to 10 inches in length inside it.

Its interior chamber measures 9.85 inches in diameter and 13.8 inches in length, while its volume is a generous 4.75 gallons. It comes with 3 trays that measure 10 inches in depth, 7.1 inches in width, and 0.79 inches in height, and are made with stainless steel. The maximum working pressure it endorses is 33 PSI.

It allows pressure adjustment, and at the end of the cycle, the machine automatically shuts off, thus saving power. Additionally, you need not worry about safety as enough measures are in check thanks to the over-temperature protection system it features, as well as the door safety switch.

  • Spacious design – measures 23.6” by 15.4” by 14.2”
  • Can fit 10-inch long instruments inside it during the sterilization process
  • Provides you with a fast 6-minute sterilization cycle in case of emergency
  • Chamber has a generous 4.75-gallon capacity
  • Can reach a peak working temperature of 273.2°F
  • Might seem a bit too expensive to some

As this machine can reach a considerably high temperature, all bacteria, germs, and viruses lying on your instruments are bound to be killed. This capability, alongside its convenient design, the generosity of the chamber volume, and its accompanying safety features make the Medica 18L one of the best options for dentists everywhere.

3. Prestige Classic 2100 Electric Sterilizer

As the Classic 2100 allows you to place instruments which measure up to 9 inches in length inside it, you can basically sterilize your entire collection of tools that you use on your patients with it. Due to the fact that it measures 13.2 inches by 13.4 inches, it does not take up a lot of space in your cabinet, and it provides more than enough room for autoclavable items due to the 8.3 inch in diameter by 9.3 inch in length size of the chamber.

It provides you with a 25-minute cold cycle and a fast 11-minute hot cycle that you can opt for when you are in a hurry and do not want to waste time between procedures. The peak temperature it can reach is 255.2°F, so all existing bacteria and germs are bound to be destroyed during the cycle.

The manufacturing company backs it with a 2-year warranty which exceeds industry standard. It boasts a simple 1-step operation that ensures you will easily use it regardless of your prior skill level of operating steam sterilizers. Furthermore, it delivers an intuitive and convenient top-loading design that makes it easy for you to insert the items you want to sterilize.

  • Can reach a maximum temperature of 255.2°F while it operates
  • Electronic detectors automatically power off the machine in case there is an insufficient water charge
  • Provides a fast 11-minute sterilization cycle
  • Simple 1-step operation ensures an intuitive, time-saving design
  • Backed by a lengthy 2-year warranty
  • Comes with only 2 trays where you can place instruments and other items

If the long 2-year warranty is not proof enough to convince you of the quality of this steam sterilizer, then its numerous safety features and the capability to reach temperatures of up to 255.2°F while operating surely will.

4. Zgood ZG-8L250

Although it does not boast the best power rating out there, this steam sterilizing machine does a more than fantastic job at killing off bacteria, viruses, germs, and all microorganisms lying on the instruments you place inside it. What gives the machine this high efficiency is the 273.2F maximum working temperature it can reach, as well as the 31.9 PSI maximum working pressure.

It comes with two trays made out of durable 304 stainless steel on which you can place your instruments. The chamber measures 9.85 inches in diameter and 13.8 inches in length, and its volume is a generous 2.1 gallons. At the end of the sterilizing cycle, it automatically shuts off, so there is no need to worry about useless power consumption.

For enhanced safety in use and to ensure a long-lasting durability of the machine, it features overheating protection and a convenient safety valve. Furthermore, it can fit items and instruments that measure up to 10 inches in length, so you are not limited when it comes to what you can place inside it.

  • Convenient size makes it fit crowded labs easily – measures 22.8” by 15.4” by 14.2”
  • Can fit instruments that measure up to 10 inches in length inside it
  • Can reach a peak operating temperature of 273.2°F
  • Chamber has a generous 2.1-gallon volume
  • Chip control temperature adjustment ensures ease of use
  • Small power rating of only 900 watts

If reasonably priced sterilization equipment that does not sacrifice on quality is what you are looking for, then this Zgood product is the right choice for you. It does not occupy much counter space, which is good news if your lab/cabinet is already filled with other equipment, and it is easy to operate due to its chip control design.

5. Aphrodite 24851

Last we have the Aphrodite steam machine which makes for the best option for those who are on a limited budget due to its low asking price. Although it is cheap, do not think that it sacrifices much in terms of performance quality. The best proof for this statement is the 273.2F maximum working temperature it can reach, as well as the more than generous 6.3-gallon capacity of its instrument chamber.

It comes with 3 trays that measure 13.4 inches in depth, 7.9 inches in width, and 1.2 inches in height, and that are made with stainless steel. The maximum operating pressure it boasts is 34 PSI, and it features a convenient 60-minute timer that allows you to set the precise operating time you want it to follow.

In terms of speed, it makes for a great option as the cold cycle lasts approximately 25 minutes, while the hot cycle lasts 6 minutes. Additionally, it measures 22.05 inches by 13.8 inches by 19.7 inches , which ensures it will not occupy too much space in your cabinet.

  • You can set the duration of the sterilization cycle as you please due to the 60-minute timer it features
  • It comes with 3 trays that you can place your instruments
  • Puts a 6-minute sterilization cycle at your disposal
  • Water-off protection ensures that the power is cut when the heating element runs out of water
  • For convenience in use, it automatically shuts off at the end of the selected cycle
  • Consumes a bit more power than other machines when it operates

With a spacious 6.3-gallon sterilization chamber which allows you to place large instruments inside it, this Aphrodite machine is one of our top recommendations. Furthermore, it comes at a considerably cheaper priced than most entries on this market, so it makes for an excellent budget-friendly option.

What You Need for Your Dental Practice?

If you are here and interested in purchasing a steam sterilizer, chances are that your field of work is dentistry. Before we dive into the subject any further, there is a discussion which must first take place, more precisely the description of the three different types of machines you will encounter. You can choose between class N, class B, and class S sterilizers, and in the following, we will explain in detail what characterizes each type to help you make an informed choice.

  • Class N

    Class N machines boast a compact design which makes them perfect for labs and cabinets where space is of the essence. However, this design comes at a cost, class N sterilizers being quite limited in terms of performance as they can be used for autoclaving only simple materials. The “N” letter in their name stands for naked solid products, indicating that they cannot be used for the sterilization process of porous loads, textiles, or hollow items. Another downfall in terms of design is the fact that steam penetration is not always guaranteed with them.

  • Class B

    Class B machines might be compact, but do not let their convenient design trick you as their performance is comparable to large steam sterilizing machines found in hospitals. The “B” letter in their name stands for big small sterilizers, being a perfect description of their capabilities as, despite the small size, they can basically provide the same performance as big, industrial machines. You can sterilize any type of instrument or item with a class B machine, so there are no limitations from this point of view, and in terms of safety in use, it is by far the best option to go with.

  • Class S

    Class S is an intermediate type of machine between N and S models, so it is hard to characterize it fully. To check if a steam sterilizer is class S or not, you have to check the spec sheet provided by the manufacturing company as only there will you be provided with an adequate answer to this question.

As it offers the best flexibility and it is suitable for a wider range of settings, we recommend you opt for a class B machine. Sure, it will most likely be smaller than other products are, but the high safety standards, the ergonomic design which endorses easy handling, and the high efficiency recommends it despite the minor flaws.

Safety and Operation Considerations

As the sterilizing machines use high pressure and high temperatures to kill all microorganisms and potential bio-hazardous contaminants lurking on the tools, items, and instruments placed inside them, they present the best solution for a thorough, in-depth cleansing. However, as their operation is as effective as it gets, the danger levels of improper use raise even further. In the following, we will present you with detailed safety and operational considerations you must keep in mind to ensure your well-being while using the autoclave, as well as the proper functioning and safety of the machine and instruments placed inside it.

  • Safety Considerations

Injury prevention guidelines you must always follow:

  • Wear the appropriate protective equipment when loading and unloading the machine – eye protection, lab coat, and heat resistant gloves;
  • Avoid superheating liquids at all costs as it could result in them boiling or exploding out of their containers – this is a condition where liquids do not appear to be boiling, yet they are actually at a temperature above their boiling point;
  • Do not seal containers as they could explode under pressure;
  • Open the door of the machine when the pressure reaches 0 and the temperature is under 249,8 degrees Fahrenheit;
  • If water runs out the bottom of the machine, do not open the door until you remove the liquid.

Items you should never try and sterilize with the machine:

  • Pathological waste – human tissues, human organs, animal tissues, animal organs, animal carcasses;
  • Low molecular weight prions and biotoxins;
  • Hazardous chemicals – flammable chemicals, corrosive chemicals, ortoxic chemical, reactive chemicals;
  • Radioactive materials;
  • Discarded sharp materials – microscope slides, microscope coverslips, used/unused syringes, used/unused needles, contaminated broken glass;
  • Dried bleach and bleach-associated materials;
  • Nitrocellulose.
  • Material Preparation Procedure
  • Pack solids loosely;
  • Do not compact waste;
  • Do not overfill biohazardous waste bags;
  • Use stainless steel pans or plastics;
  • Open the containers prior to the sterilization process;
  • Leave enough room between the trays when you insert more than one in the machine;
  • Check glass items for cracks;
  • Do not fill containers to the top;
  • Loosely screw the caps of bottles.
  • Basic Instructions for Safe Operating

While we encourage you to follow the advice given below, make sure that you check the instructions manual accompanying the steam sterilizer as well and take into consideration the operational tips given in it. Some machines do have their own, unique characteristics, so it is imperative for you to check the manual to ensure complete safety.

  • Place the items inside the chamber;
  • Check that the drain screen is not obstructed or plugged;
  • If the situations asks for it, check the deiozined water reservoir and fill it until the top line is reached;
  • Properly close the machine’s door;
  • Select the load type, sterilization time, sterilization temperature, and the dry cycle, or simple select a pre-programmed cycle;
  • Run the machine’s cycle;
  • Put on your safety gear when the cycle is finished;
  • Slightly open the door and let the steam get out;
  • Let the items/instruments cool for approximately 10 minutes;
  • Fully open the door and take the instruments out.

Autoclavable Items

As a doctor, regardless of your line of work, in order to avoid the transmission of any infection, you must sterilize the instruments, clothes, and implanted devices that have made contact with body tissues or fluids. However, not all items are autoclavable, and we will immediately list the ones that you can insert in the machine for the sterilization procedure as they do not present any risks in the high pressure and high-temperature environment.

List of autoclave-compatible materials:

  • Borosilicate glass items – The silica and boron trioxide composition of these glassware types makes them safe for the steam sterilization procedure as they are resistant to thermal shock due to their low coefficient of thermal expansion.
  • Stainless steel items – The composition of stainless steel, which is steel alloy with a minimum of 10.5% chromium content, makes it corrosion resistant and capable of dealing with high temperatures.
  • Pipette tips – Commonly found in medical labs and establishments, pipette tips are heat and steam resistant, which is good news as you can reuse them instead of having to discard the tips after each use.
  • Polypropylene items – This thermoplastic polymer, as the “thermo” part of the description suggests, does indeed resist high-temperature environmental conditions. Thus, all instruments made with polypropylene are autoclavable.
  • Gloves – We must warn you from the get-go that if you do not wrap the gloves in a container, their material might melt. However, this depends on the specific material they are made from. We recommend you check this aspect before you try to sterilize them.
  • Tissue culture flasks – These flasks are made with thermal resistant materials so that sterilization can be applied to them and they can be reused, thus saving a lot of money for doctors in all fields and domains.
  • Surgical instruments – They are made of a qualitative stainless steel, 316 steel to be more precise, which is known as surgical steel as well. This material makes them stronger not only against corrosion but against high temperatures as well.

Space is something you sorely need from an autoclave, so our ranking of the Tuttnauer 1730 Valueklave comes as no surprise, this machine allowing you to insert instruments or tools as large as 11.5 inches in length inside of it. Furthermore, it provides you with the possibility to opt for a quick sterilizing cycle which lasts only 11 minutes, this being good news for any dentist, doctor, or tattooing artist as it means that the next patient or customer won’t have to wait for a long time before he/she is tended to. Of course, we must mention the numerous accompanying safety features of the machine as they ensure a smooth and trouble-free operation.

We chose the Prestige Classic 2100 Electric Sanitizer as our personal favorite not only due to its features and thorough performance which ensures no microorganisms will lay on the instruments you place inside it, but because of its top-loading design which makes it a lot more convenient to work with. If a good bargain is what you are looking for, we definitely recommend the Aphrodite 24851 as it boasts a cheap asking price when compared to other top products in this niche, all while managing to provide quick sterilization cycle times, and putting a convenient 60-minute timer at your disposal.

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