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Important information

As a key supplier to the NHS, PHE and other critical life science sectors during the Covid-19 crisis, LTE is committed to ensuring the uninterrupted supply of its sterilization, decontamination, as well as laboratory thermal equipment including incubators, ovens and drying and solution/blanket warming cabinets.

Our UK production site remains fully operational and can offer some products from stock or on shortened lead times. Our Service Centre is continuing to operate a UK-wide team of engineers to carry out a full range of maintenance, service and testing to UKAS and HTM guidelines on both LTE and non-LTE brands of laboratory autoclaves, porous load sterilizers and washer-disinfectors.

OP Series Ovens

The OP Series of ovens offers maximum flexibility and unparalleled performance for the ever-increasing demands of today’s laboratory and process facility.

Sterilizer Ovens

Traditional quality and modern manufacturing techniques linked with LTE’s built-in reliability mean that the OP Series represents excellent value.




The OP Series is available in 4 sizes from 60 to 250 litres. Customers can choose between fan circulated or natural convection options, plus there is a choice of PID control systems to suit most applications as detailed below:


“U” Models

This Uni-program system offers single temperature selection and control at the push of a button. Following a mains power failure, the controller will automatically re-instate.


“M” ModelS

Our multi-program controller will allow upto 8 multiple-step cycles to be stored in the memory at any one time. It also incorporates a selectable temperature ramping function, which allows controlled temperature rise and fall rates to be programmed into a cycle. At the end of a program sequence, the controller can be programmed to stop or repeat the sequence again. The repeat function can be programmed for a specified number of repeats or it can repeat continuously until interrupted. Following a mains power failure, “M” models have 3 recovery options (cycle hold, start cycle from the beginning or re-start cycle from point of interruption). RS232 or RS485 communication ports can be added to all ”M” models.



Fast heat-up times, almost undetectable overshoot and superb accuracy (see table on page 4) make the OP Series a class-leading product.


All OP Series ovens incorporate a manual reset over-temperature cut-out, in line with IEC1010-2-010




Model Capacity (Litres) Air Circulation Internal dims HWD (mm) External dims HWD (mm) Fluctuation
(+/- %)
Spatial Variation (empty) (+/- %) Shelves / Positions
OP60-U/M 60 Natural convection 400 x400 x 400 590 x 735 x 575 Nat Conv 0.5 3.5 2/6
OP60-UF/MF  60  Fan circulation 400 x400 x 400 590 x 735 x 575 Fan Circ 0.25 1.0 2/6
OP100-U/M 100 Natural convection 500 x 500 x 400 690 x 835 x 575 Nat Conv 0.5 3.5 2/8
OP100-UF/MF 100  Fan circulation 500 x 500 x 400 690 x 835 x 575 Fan Circ 0.25 1.5 2/8
OP150-U/M 150 Natural convection 600 x 500 x 500 790 x 835 x 675 Nat. Conv.0.5 3.5 2/10
OP150-UF/MF 150  Fan circulation 600 x 500 x 500 790 x 835 x 675 Fan Circ 0.25 1.5 2/10
OP250-U/M 250 Natural convection 1000 x 500 x 500 1190 x 835 x 675 Nat. Conv. 0.5 4.0 3/18
OP250-UF/MF 250  Fan circulation 1000 x 500 x 500 1190 x 835 x 675 Fan Circ 0.25 2.0 3/18

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LTE Scientific

LTE Scientific