http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1312469-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a8e49a2b5f6d0ba32839687472b3a437 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-3335 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N27-333 |
| filingDate | 1970-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1973-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1312469-A |
| titleOfInvention | Ion selective sensing device |
| abstract | 1312469 Electro-chemical analysis MILES LABORATORIES Inc 9 Nov 1970 [20 Nov 1969] 53236/70 Heading G1N The semi-permeable membrane 25 of an ion selective sensing device includes a semi-permeable polymer matrix having incorporated therein a chelating agent. Tube 22 containing a reference solution of electrolyte, e.g. lead nitrate 32, and calomel reference electrode 26 is positioned with silver-silver chloride reference electrode 31 in the solution 33 whose ion concentration e.g. lead is to be measured, the P.D. measured by meter 28 giving a reading of the difference in lead ions between 32 and 33. In the arrangement of Fig. 1 (not shown) two compartments one of which contains a reference electrolyte and the other of which contains the solution being measured are separated by a divider having an opening closed by the semi-permeable membrane, each compartment including a standard reference electrode. The matrix may be chosen from the group ethyl cellulose, polyvinyl chloride, cellulose acetate and collodion. The chelating agent may be chosen from the group thenoyltrifluoro-acetone, diphenylthiocarbazone, gallocyanine, dimethylglyoxime and ethylene glycol tetraacetic acid. The membrane may contain a plasticizer and various examples of this and manufacture of the membrane are given. |
| priorityDate | 1969-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.