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Torrey Pines Scientific EchoTherm™ HS70 Corrosion-Resistant Fully Programmable Digital Stirring Hot Plates

Designed for corrosive environments where other stirring hot plates would be destroyed quickly by vapors or spills. It can be purged using an inert gas, such as lab air, through a fitting on the rear of the unit. Purging provides a positive gas pressure inside the unit to prevent corrosive gases from entering the chassis.

HS70 $2,035.00


  • 10-program memory stored in CMOS. No batteries required
  • Each program can be 10 steps, where each step includes a temperature, stirring speed, time and heating rate
  • Repeat any program 1–98 times automatically. Infinite repeats settable
  • Programmable and non-programmable operation
  • Platinum RTD temperature measurement for ±1% accuracy
  • 8” solid ceramic heater top for quick heating on a flat, white, chemically resistant surface
  • Settable to 450˚C in 1˚ increments
  • Temperature ramping for exact heating and cooling rates
  • PID temperature control to 1°C on plate surface or solution with probe
  • Stir up to 2 liters of aqueous solutions from 100–1500 rpm
  • Timer goes up to 99 hours, 59 minutes, 59 seconds with user settable Auto-Off
  • 6” ptfe probe provided
  • Electronic calibration stored in CMOS
  • RS232 interface for control or recording data on a computer
  • NTP pipe-to-pipe, ¼” purge gas fitting on rear of chassis
  • 12-month warranty
  • UL, CSA and CE compliant

Product Description:

EchoTherm™ Model HS70 Corrosion-Resistant Fully Programmable Digital Stirring Hot Plates are the most advanced and easy-to-use units available. They are designed with a purge port for infusing an inert gas, such as lab air, into the chassis of the unit. This positive pressure inside the chassis causes the gas to flow out of any openings and prevents corrosive gasses form entering the chassis, improving unit life greatly. In manual operation, simply select the parameter to be set and scroll to the value needed. The unit will do the rest. In the programmable mode, routines can be stored for instant recall and use. The stored routine will run automatically, without attention, and exactly the same time after time.

Programs can be simple or complex depending upon the need. Multiple temperatures, temperature ramp rates, stirring speeds and timed events can be stored. When run, the unit monitors the program to be sure it runs exactly as written. Complete walk-away automation.

The chart above shows a typical program that can be stored in memory and run at any time. The program can also be instructed to repeat itself from 1 to 98 times, or infinitely if wanted.

Product Specification:

Memory capacity 10 programs
Individual Program Capacity 10 steps
Repeat a program automatically 1 to 98 times or infinitely
Temperature Measurement:
Platinum RTD 100 ohm at zero in plate and in probe
Range 0–450°C
Readability 1°C
Hot Plate:
Dimensions 8” (20.3 cm) x 8” (20.3 cm)
Maximum plate temperature Ceramic 450°C
Temperature control type PID
Temperature accuracy ±1%
Temp stability 1°C
Heater power in watts 600 watts
Speed range unloaded 100–1500 rpm
Capacity 2 liters water
Readability 1 rpm
Settability nearest 10 rpm
Available in 100, 115 and 230 VAC, 50/60 Hz, 600 watts
Fused high line
Line cord Detachable, 6 foot (1.8 meter), three-wire grounded
Dimensions unpacked
Width 9.125” (23.18 cm)
Depth 15.75” (40.01 cm)
Height 4.75” (12.07 cm)
Dimensions packed
Length 18.25” (46.36 cm)
Height 9.5” (24.13 cm)
Width 12.25” (31.12 cm)
Weight, unpacked 12 lbs (5.4 kg)
Weight packed for shipment 14 lbs (6.3 kg)

Accessories Available:

HS30-600 Probe, Immersion, 6” stainless steel $115.00
HS30-601 Probe, Immersion, 10” stainless steel $140.00
HS30-602 Probe, Immersion, 6” ptfe $125.00
HS30-603 Probe, Immersion, 6” solid glass $205.00
HS30-604 Probe, Immersion, 9” solid glass $270.00
HS50-600 Probe, Immersion, 4” stainless steel $110.00
HS30-700 Temperature Probe Calibration Kit $70.00
HS30-800 Plate and Probe Calibration Kit $460.00