Corning Pc 351 Manual
The Corning PC-351 Hot Plate Stirrer has a sturdy ceramic top and independent heating and stirring controls. Product Family: PC-351, PC 351, PC351 Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. Are specifically listed in the above stock. The PC-351 has a stirring range of 250 to 1000rpm. This was originally a stirring hot plate but the heater isn't working so it is being sold as a stirrer only.
Background Spontaneous and unexpected heating of hotplates has been the cause of laboratory fires and explosions. In 2005, Lawrence Berkeley National Laboratory issued a safety advisory related to a Corning model PC 420 hot plate. In 2007, 2011, 2012, 2014 the University of California, University of Pennsylvania, MIT, and Oak Ridge National Lab issued similar safety advisories for Corning PC-35, PC-200, PC-220, PC- 351, Fisher IsoTemp and the Thermolyne Model:SP46925.
Issues. Hotplates manufactured from 1960s – 1980s may still be in active use.
Hotplates in disrepair may be in use. Older hotplates with relay heater switches can spontaneously heat in the heater dial OFF position.
Liquids in contact with electronics may cause shorts. Newer hotplates with TRIAC or microprocessor-controlled heater switches may spontaneously heat in the OFF position due to liquid exposure to the electronics. Hotplate/stirrer combinations may be used when only stirring is required. Hotplate/stirrer combinations generally stay plugged in even when inactive. Temperature sensors may be misplaced, fall out or malfunction. Similarity of heating/stirring control dials and left /right reversal of control dials on hotplates from different manufacturers can lead to user errors. Users may not read user manuals.
Corning Hot Plate Parts
Recommendations. Discard old hotplates through Emory Surplus. Hotplates purchased prior to 1984 do not have temperature feedback controls. These models include the Corning PC-35 and PC-351 (pictured above) and the Thermolyne Model:SP46925. When only stirring is required, acquire and use a stirrer instead of a hotplate/stirrer combination. Unplug inactive hotplates or heating mantles in close proximity to oil baths, combustible or flammable material.
Select hotplate housing designs that are less affected by spills and aggressive environments. Where liquid spills can be anticipated (i.e.
Water cooled reflux) do not use hotplates that have open housing designs. Look for hotplates with two independent temperature control circuits, which switch off heating in case of an over temperature situation. Make user manuals easily accessible. References: This article was adapted from the Image Credits:.
Corning Pc 620d Manual
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They conduct Fingerprint Analysis, Fingerprint Testing,. Analysis,. Testing, DNA Analysis, DNA Testing and regular health tests as well. Visit their website at. Answered on Mar 03, 2018. It sounds like either the bulb is loose or the connection between the bulb socket and a wire is loose.
To check both, Loosen the screw knob on the underside of microscope and open the panel to expose the bulb. Use a small screwdriver to loosen the screws holding (the two screws closest to the bulb) the prongs of the halogen bulb. Note that the prongs of the bulb are held in place by small brass plates which shift slightly when the screws are loosened.
Remove the old bulb. Important: Do not touch the new halogen bulb with bare hands. Wear gloves or hold the bulb using tissue or lens paper. Body oils may damage the halogen bulb. Insert prongs of replacement bulb into top of socket (above the brass plate) and tighten screws slightly. (The brass plates will move up to hold the prongs in place.) Close door and hand tighten the thumbscrew knob.
If this does not work, contact Premier for assistance: Premiere速 Microscope Service, 7241 Gabe Court, Manassas, VA 20109 (703) 330-1413 Answered on Jan 15, 2018.