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Yamato SI Series Natural Convection Dry Sterilizers

SI402-115V  SI402-220V / SI602-115V  SI602-220V


The Yamato SI series consists of economical dry heat sterilizers built with natural convection airflow. The SI dry sterilizer models can be used for samples that are sensitive to moisture such as powders, fat, & oils. Thanks to its non-corrosive feature, the SI dry-heat sterilizer can also be used for metal & instruments that may become corroded. The Yamato SI series static-air dry sterilizer guarantees massive savings with a much lower initial cost, maintenance cost, and operation cost.

Yamato’s programmable SI dry sterilizers deliver better operability with an improved temperature controller. For ultimate convenience, common operation settings including quick auto-stop & auto start operations can be easily accessed in the digital control panel. In addition, the SI series are programmable up to 30 steps, 6 patterns, and repeat operation so you can save effort and time. The SI dry sterilizer series are built with self diagnostic functions for ensured safety. Perform cost-effective dry-heat sterilization with Yamato’s SI401 dry sterilizer & SI601 dry sterilizer models available in 77L & 159L size options.

Operation and functions

  • Improved temperature controller with better operability
  • Digital setting by main menu and ▲▼ keys for fixed temperature, program, quick auto stop, auto stop and auto start operations
  • Standard equipped with calibration off-set, lock function, power failure recovery mode
  • Programmable with maximum 30 steps, 6 patterns, repeat operation

Increased Safety Features

  • Standard equipped with self diagnostic functions, earth leakage breaker and overheat prevention device
Circulation methodNatural convection dry laboratory sterilizers
Operating temp. range*Room temp. +5~260°C
Temp. adjustment accuracy2°C (at 260°C)
Temp. distribution accuracy20°C (at 260°C)
Max. temp. reaching time~70min.
Interior / ExteriorStainless steel / Chrome free electrogalvanized carbon steel sheet coated with chemical-proof baked-on finish
HeaterIron chromium wire heater / 1.2kWIron chromium wire heater / 1.36kW
SensorK type Thermocouple
Exhaust portI.D.30 mm x 2 (top)
Temp. controllerPID control
Temp. displayMeasured temp. display: green 4 digit LED digital display / Setting temp. display: red 4 digit LED digital display
Timer1 min~99hr 59 min and 100~999 hrs 30 min. (with timer wait function)
Operation functionFixed temperature, quick auto stop, auto stop, auto start, program (6 pattern: 30 steps x 1, 15 steps x 2, 10 steps x 3, pattern repeat function)
Additional functionsLock function, auto recovery after power failure, calibration off-set
Safety deviceSelf diagnostic functions (temp. sensor failure, heater disconnection, SSR short circuit, memory error, internal communication error, measurement temperature error, automatic overheat prevention), overheat prevention device, earth leakage breaker
Internal dimensions WxDxH450 x 430 x 400 mm600 x 530 x 500 mm
External dimensions WxDxH550 x 540 x 777 mm700 x 640 x 877 mm
Internal capacity77L159L
Shelf plate with standard load~15 kg/pc.
Shelf rest step number / pitch10 steps / 30 mm13 steps / 30 mm
Power source (50/60Hz)AC115V 11A (with plug)
AC220V 6A (no plug, round terminal)
AC115V 12.5A (with plug)
AC220V 6.5A (no plug, round terminal)
Weight~42 kg~59 kg
Included accessoriesShelf and brackets (stainless punching metal)
Shelf plate / bracket2pcs./4pcs. (bottom one is screwed)
List Price$ 2,940$ 3,360

* Conditions: temperature 23°C±5°C, humidity 65%rh±20% (no load)

Click on the links below to download the associated PDFs.

Sterilizer Overview

SI Series Catalog

Sterilizer Accessories

Autoclave Steam Sterilizer Buyer’s Guide

To download Operational Manual, visit our Technical Support Center

Steam Sterilizers

Steam sterilization is the most widely used and most dependable method in industries, from pharmaceutical to food production. It is inexpensive, non-toxic, and highly effective in killing microorganisms and fungal spores. Furthermore, steam can penetrate fabrics easily. Our steam sterilizers can help you disinfect lab, medical, or dental equipment.

Steam Sterilizable Respiratory Therapy Equipment

Sterilizers used in hospitals are highly important as these keep the risk for contamination at bay especially respiratory therapy equipment, which are considered as semi-critical items because of their frequent contact with non-intact skin and mucous membranes. Therefore, these should be cleaned and disinfected.

While chemical germicides such as stabilized 6% hydrogen peroxide and 2% glutaraldehyde-based formulations are essential in disinfecting equipment, physical methods of disinfection like pasteurization and steam sterilization are ideal for disinfecting equipment.

Yamato’s Lab Steam Sterilizers & Autoclaves are not only compact and space-saving, but they are also great for disinfecting tubing of mechanical ventilators for example.

Small Medical Instruments

It is also crucial to keep small instruments such as syringes, needles, cannulas, and even forceps as sterile as possible. With the use of autoclaves, you can effectively ensure the destruction of all microorganisms through the application of heat and pressure on equipment. However, you must make sure that these are non-plastic as temperatures could potentially reach up to 135 °C.

Dental Instruments

Reusable dental instruments including those for cleaning, disinfecting, rinsing, drying, inspecting, wrapping, and sterilizing should be decontaminated as these are exposed to biological fluids like saliva and blood, which may potentially pose a health risk for the next subsequent patient when left unsterile.

That is why steam sterilizers are highly recommended because these are efficient, cost-effective, and incredibly safe for sterilizing instruments in primary care dental practices. Accordingly, instruments should be exposed to temperatures between 134 °C-137 °C and a 2.1-2.25 bar gauge pressure for a holding time of 3 minutes to ensure effectiveness.

Lab research equipment

Yamato steam sterilizers are suitable for lab applications in many industries such as pharmaceutical, life science, food safety, and water based lubricant and coolant industries. For these research laboratories, Yamato autoclaves can disinfect liquid samples as well as solid apparatus. With liquid samples, effective sterilization depends on achieving specific temperature, which requires variation on sterilization time. As an alternative, Yamato offers an optional sample temperature sensor inserted into the samples to ensure required temperature is reached eliminating sterilization time adjustment. This option is available for SN and SQ Series as well as SM Series Large Capacity Steam Sterilizers.

Yamato dry sterilizers are suitable for research as these are durable and non-corrosive. Therefore, you can sterilize samples without damaging moisture-sensitive materials including fat, oils, and powders. Furthermore, dry heat sterilizers like the Natural Convection Dry Sterilizers by Yamato are guaranteed toxic-free.

40 years as a leading scientific lab equipment provider in the United States.
All products come with a 1 year warranty.
Every product is made through environmentally conscious methods and remains eco-friendly all throughout its life cycle.