XJ
NJbinglab
Aluminum alloy or graphite
Isotope Industry, Heavy metal Industry, Semiconductor Industry
Please contact us
Room temperature to 220℃
Resistant to strong acid and alkali corrosion
1
7-14 working days
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Product Description
-Size: 200*300mm/400*300mm/600*400mm/500*250mm/Support customization
-Controller form: Split (can be placed outside the fume hood to prevent damage to electronic components) The power cord can be placed in the cabinet to reduce interference with the experiment and increase the neatness of the laboratory bench
-Working temperature: room temperature to 220℃
-Material: refined aluminum alloy and special material (PFA coating)
-Temperature control accuracy: ±1℃
-Continuous work for 48 hours
-PTFE column at the base, corrosion-resistant, PTFE legs (can be long or short), reducing the integration of metal elements into the laboratory
-The hotplate can be customized according to the size of the fume hood
-The power cord is wrapped with PFA tube as a whole, which further increases the service life
-The power cord can be long or short, such as 1.5 meters, 2 meters, etc.
-It will cause the laboratory bench to heat up when the heating time long. We can customize the PTFE insulation layer. If necessary, please contact us.
-Hot plate digestion method
Weigh 0.2g~0.3g (accurate to 0.1mg) sample (7.2) in a 50ml polytetrafluoroethylene crucible (6.5), moisten with water, add 10ml hydrochloric acid (5.1), heat on a hot plate in a fume hood at 90C~100 to decompose the sample initially, and when the digestion solution evaporates to about 3ml remaining, add 9ml nitric acid (5.2), cover and heat until there are no obvious particles, add 5ml~8ml hydrofluoric acid (5.3), open the cover, heat at 120C for 30min, cool slightly, add 1ml perchloric acid (5.4), and heat at 150'C~170'C until white smoke appears. Shake the crucible frequently during heating. If there are black carbides on the crucible wall, add 1 ml perchloric acid (5.4), cover and continue heating until the black carbides disappear, then open the cover and heat to drive out the acid until the contents are in the form of non-flowing liquid beads (observe while hot). Add 3 ml nitric acid solution (5.12), dissolve the soluble residue with warm water, transfer the entire amount to a 25 ml volumetric flask, make up to the mark with nitric acid solution (5.12), shake well, store in a polyethylene bottle, let stand, and take the supernatant for testing. Complete the analysis within 30 days.