The GRF series Dry Heat Sterilizer (Hot Air Sterilizer) is designed for drying, baking, and disinfection applications in industrial and mining enterprises, chemical laboratories, and R&D institutions. It features microprocessor PID temperature control for accuracy and reliability, a wide timing range, and an automatic saving system.

Key Features — GRFseries

Outer Shell Material: Cold - rolled steel sheet surface spray
Inner Material: SUS304 Stainless steel
Microprocessor PID temperature control, accurate and reliable
Inner round cornered design, convenient to clean
Inlet and outlet at back side
Outer observation window and no glass inner door
Stainless steel tube heater

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Model-specific documentation

Documents for GRFseries

Check the covered model, language and document status before use. The manual supplied with the actual unit remains the controlling reference.

Product datasheet · English

GRFseries Dry Heat Sterilizer (Hot Air Sterilizer) product datasheet

Public PDF

HQS datasheet for the GRFseries: product overview, features and the technical specifications published for this model. Confirm the ordered configuration in your quotation.

Product overview
Features
Technical specifications

Covered model: GRFseries
Length: 2 pages
File: PDF · 212 KB
Web copy prepared: 2026-09-25

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Dry Heat Sterilizer (Hot Air Sterilizer) Specifications

Model	GRF-9023A	GRF-9053A	GRF-9073A	GRF-9123A	GRF-9203A
Temperature Range	Room Temperature +10 º C - 250 º C	Room Temperature +10 º C - 250 º C	Room Temperature +10 º C - 250 º C	Room Temperature +10 º C - 250 º C	Room Temperature +10 º C - 250 º C
Temperature Fluctuation	± 1 ℃	± 1 ℃	± 1 ℃	± 1 ℃	± 1 ℃
Temperature Uniformity	≤Max working temperature ±2.5%	≤Max working temperature ±2.5%	≤Max working temperature ±2.5%	≤Max working temperature ±2.5%	≤Max working temperature ±2.5%
Inner Cyclic Mode	Forced convection	Forced convection	Forced convection	Forced convection	Forced convection
Alarm Type	Over temperature alarm, Timing alarm and Temperature probe damage alarm	Over temperature alarm, Timing alarm and Temperature probe damage alarm	Over temperature alarm, Timing alarm and Temperature probe damage alarm	Over temperature alarm, Timing alarm and Temperature probe damage alarm	Over temperature alarm, Timing alarm and Temperature probe damage alarm
Temperature Controller	LCD display and P.I.D. temperature controller	LCD display and P.I.D. temperature controller	LCD display and P.I.D. temperature controller	LCD display and P.I.D. temperature controller	LCD display and P.I.D. temperature controller
Work Room Dimension WxDxH (cm)	303028	423735	454545	553655	605564.5
Capacity(L)	25	54	91	108	212
Outline Dimension WxDxH (cm)	585045	715653	746463	836172	887482
Shelves	2	2	2	2	2
Rated Power (W)	650	1000	1500	1600	2450
Power	1 Φ 220V 50Hz	1 Φ 220V 50Hz	1 Φ 220V 50Hz	1 Φ 220V 50Hz	1 Φ 220V 50Hz

Options & accessories

RS485 communication serial port
Micro pinhole printer
RS485 to USB Transfer interface

Warranty and after-sales service for GRFseries

How HQS handles warranty, spare parts and repairs for this model.

Warranty period: The main-unit warranty varies by model and order. The period that applies is stated in your quotation and order confirmation; please confirm it before purchase.
What is covered: A malfunction caused by a manufacturing or quality defect within the warranty period is repaired free of charge. Consumables and accessories, damage from misuse, and units with an altered or removed serial label are not covered by the main-unit warranty.
Spare parts: Spare parts and technical support are available for at least eight years from the date HQS ships the product.
Response time: Service requests get a first reply within one business day. Please send the serial number, model, main-unit version and a description of the problem.
Repairs in warranty: If a confirmed warranty fault needs a replacement part, HQS ships the part at its own expense, and the faulty part is returned to HQS.
Repairs after warranty: HQS sends a cost-based quotation and proforma invoice first. Repaired parts are tested before they are returned. Technical help by email or phone is free.

Full warranty and service terms →