水银汞有毒气体检测管271 hg 产品详情
详情介绍：
水银汞有毒气体检测管271 hg
mercury no.271 hg
performance
measuring range
1 to 20 mg/l
sampling time
5minutes
detecting limit
0.5mg/l
colour change
pale orange → bluish purple
reaction principle
hg + pan (indicator) → complex compound
shelf life
3 years
corrections for temperature & humidity
unnecessary
store the tubes at cool and dark place.
possible coexisting substances and their interferences (note)
substance
concentration
interference
change colour by itself to
fe2+
0.5mg/l
-
reddish purple (0.5mg/l)
fe3+
1 mg/l
-
no (100 mg/l)
cu
0.5mg/l
+
reddish purple (0.5mg/l)
zn
0.5 mg/l
+
purple (0.2mg/l)
mn
1mg/l
+
bluish purple (1mg/l)
al
0.5mg/l
+
no (100 mg/l)
ni
0.3mg/l
+
purple (0.3mg/l)
co
0.2mg/l
+
purple (0.2mg/l)