For instance, the Ferric Chloride and Orthophosphoric acid
activated carbons have acidic surface while the potassium carbonate activated carbons have basic surface.
1 mL of orthophosphoric acid
dissolved in 900 mL of HPLC grade water and the volume was made up to 1000 mL with water and the solution was filtered through 0.
02M Na2HPO4 solution was taken and orthophosphoric acid
was added drop-wise until the required pH was obtained.
The fractured tooth surface and the fragment were subjected to acid etching with 37% orthophosphoric acid
for15 seconds, then rinsed thoroughly with water and air dried.
3% orthophosphoric acid
in water (solvent B) for the ClFr, and acetonitrile (solvent C) and solvent B for the EtFr.
Tenders are invited for supply of Orthophosphoric Acid
(Food Grade) for our Plant at The Mysore sugar Company Ltd Mandya
Potassium chloride, Disodium hydrogen orthophos-phate, Potassium dihydrogen orthophosphate, Hydrogen peroxide, Certrimide, Agar, CTAB, Glucose and Glycerol, Sodium nitrite and Orthophosphoric acid
, Sodium carbonate, Sodium bicarbonate, Isopropanol, Phenol, Chloroform, Ethylene diamine tetra-acetic acid, Boric acid, Glacial ace tic acid, Isoamyl alcohol, Sodium hydroxide, Sodium acetate, Sodium dihydrogen phosphate, Magnesium sulphate were purchased from Qualigens, & Merck, India respectively.
Tooth is etched with 37% orthophosphoric acid
for about 20-30 sec to increase the surface area for bonding.
Isopropanol, ammonia (33%), methylene chloride, and orthophosphoric acid
(85%) were of analytical grade and were purchased from Merck KGaA.
Allantoin and uric acid were from Sigma; 1-heptanesulfonic acid, sodium salt monohydrate was from Sigma-Aldrich; potassium dihydrogen phosphate was from Merck; sodium hydroxide was from Riedel-de Haen; orthophosphoric acid
was from BDH, and Moni-Trol Level 1 Chemistry Control Serum was from Dade International.
The mobile phase was prepared using deionized water; 400 mL/L tetrabutylammonium hydroxide (TBAH) in water (Fluka) was used as a counter anion, and orthophosphoric acid
(normapur grade; Prolabo) was used to adjust the pH.
Tenders are invited for Purchase of 140,000 to 150,000 Gal liquid polyaluminum chloride (bulk); 60,000 Gal 25% sodium hydroxide caustic (bulk); 16,600 Gal 36% orthophosphoric acid
(bulk); 110,000 Gal 15% sodium hypochlorite solution (bulk); 1,600 Gal liquid polymer (anionic polyacrylamide); 8000 lb.