http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2021123868-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_46f56614dabd54b7e00407ecd2a9f506 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N31-221 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N31-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-80 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-80 |
| filingDate | 2019-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea38b1cfa78a4faea90943df5f5d3339 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_252672c064dcc5cfcf74a9dafe5152c4 |
| publicationDate | 2021-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2021123868-A1 |
| titleOfInvention | Reagent composition for ph measurement |
| abstract | In this reagent composition for measuring the pH of test water, methyl red with an acid dissociation constant (pKa) of 5.1, phenol red with a pKa of 7.7 which is greater than that of methyl red, and bromocresol purple with a pKa of 6.3 which is between those of methyl red and phenol red are dissolved at prescribed ratios in a diol, such as ethylene glycol. With respect to test water to which the reagent composition has been added, absorbances at three wavelengths of a wavelength selected from a range of from 410 to 430 nm, a wavelength selected from a range of from 515 to 535 nm, and a wavelength selected from a range of from 580 to 600 nm are measured, and the pH of the test water is determined based on the absorbances. In this way, it is possible to measure the pH of the test water in a range of from 4 to 9. |
| priorityDate | 2018-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.