31 Ovens, Furnaces & Heating Equipment
Best Practice Guide for Safely Using Laboratory Heating Blocks
Asynt announce an updated 2020 version of its popular best practice guide for safely using laboratory heating blocks. Used by laboratory scientists worldwide, when utilised properly, heating blocks provide a safe, convenient and productive tool for heating round bottomed flasks, tubes and vials. Typically used in combination with a standard hotplate stirrer - heating blocks are proven to provide superior heat-conducting properties compared to oil baths. They also pose a far lower fire risk and their use makes the clean-up of glassware far easier as there is no residual oil contamination on the outside of the reaction vessel. Today it is widely acknowledged that heating blocks can not only accelerate your chemical reactions - but also ensure that you can work in a safer, cleaner, healthier working environment.
Dr Ffion McKeague, Technology Manager at Asynt, said: “Our original best practice guide was written in conjunction with internationally respected experts from the Department of Chemistry, University of St Andrews and Advanced Chemical Safety Inc. The 2020 Laboratory Heating Blocks - Best Practice Guide has been updated with new improved illustrations and technical data to lead you through best practices for glassware inspection, setting up your reaction, heating your reaction and the post-reaction cool down phase.”
More information online:
ilmt.co/PL/Vylx 51609pr@reply-direct.com Class 100 Cleanroom Electric Cabinet Pass-through Oven
No 971 is an electrically-heated, 500ºF/257ºC class 100 cleanroom cabinet oven from Grieve, currently used to sterilise glassware at the customer’s facility. Workspace dimensions measure 36” w x 36” d x 39” h. 20kw are installed in incoloy sheathed tubular elements to heat the unit, while a 1200 CFM, 1-1/2 HP recirculating blower motor provides horizontal airflow to the workload.
This Grieve cleanroom oven features 4” thick insulated walls throughout and a type 304, 2b finish stainless steel interior with 1/2” inside radius corners, all seams welded, ground and polished. The stainless steel exterior has a #4 brushed finish. The unit is equipped with front and rear access doors for pass-through to the cleanroom plus an integral wall sealing flange. A red pilot light onboard the oven signals when the opposite door is open. All door hardware is chrome plated.
For class 100 cleanroom compliance, this cabinet oven has a 12” x 12” x 6” thick HEPA fresh air filter with 2” prefilter and a 30” x 24” x 6” thick stainless steel high temperature HEPA recirculating filter.
Controls on No 971 include a Minihelic pressure gauge and DOP validation port across each set of filters, digital programming temperature controller, manual reset excess
temperature controller with separate contactors, recirculating blower airflow safety switch, 10” diameter circular chart temperature recorder, fused disconnect switch and an SCR power controller. A stainless steel loading truck with six removable pans and a transfer dolly with oven-to-dolly and dolly-to-truck latches are also furnished with this Grieve oven. More information online:
www.grievecorp.com
52470pr@reply-direct.com
New Water/Shaking Water Baths Feature Temperature Range up to 100°C
The Lauda Hydro water bath product line offers the perfect equipment for every laboratory requirement with six water baths, two water baths with a circulating function and three shaking water baths. The Lauda Hydro water baths have an interior made of high-quality stainless steel and provide the right bath depth and openings for every application with bath volumes from 4 to 41 litres.
The water bath heater is located directly
under the bottom of the screen. This ensures homogeneous temperature distribution and rapid achievement of the desired temperature with a high temperature stability of ±0.1 K. The heater power is adjusted to the size of the bath. The optional circulating function is ideal for applications which require both temporal and spatial temperature distribution throughout the bath. Water baths with a circulating system have an excellent temperature homogeneity of ±0.02 K.
All water baths offer a temperature range of up to 100°C, which also permits applications in the boiling temperature range. A timer function can be used to set a switch-on delay and the duration of the operating time, either after a switch-on delay or after reaching the set temperature. The high-contrast 3.5-inch TFT display shows all the settings and operating values. The controller also has an electronic function check with a visual and acoustic alarm signal in the event of an error. The double over temperature protection allows reliable continuous operation, even in the absence of the operator.
The Lauda Hydro series shaking water baths can be used for a variety of tasks in the laboratory depending on requirements. The device type H 20 SOW creates a circular motion for the sample whereas the types H 20 S and H 20 SW are designed for a linear, oscillating shaking movement.
The built-in speed controller enables a load-independent, infinitely variable shaking movement with a soft start. The two shaking water baths H 20 SW and H 20 SOW are equipped with a cooling coil as standard. The temperature range of the shaking water baths can be extended down to 10°C by connecting them to the domestic water supply or to commercially available circulation chillers.
Lauda has rounded off its new water bath line with evaporation baths and a paraffin stretching bath for special applications such as gentle evaporation from Erlenmeyer flasks and the stretching and drying of sectioned tissue samples.
More information online:
ilmt.co/PL/LpPv 51622pr@reply-direct.com
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