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Chemicals-S
Viewing Page 9 of 184
(1,835 results)
Sodium thiosulfate Sol. .025N 1L
Item #:
HCH/2409353
Supplier #: 2409353
Supplier #: 2409353
Sodium Thiosulfate Standard Solution Stabilized 0.0250 N 1 L For dissolved oxygen determination by Winkler titration. Exact Match 89231-070
Sodium Salicylate, Reagent 500g
Item #:
GFS/69261
Supplier #: 69261
Supplier #: 69261
GFS Chemicals, Inc.
Mfg Item # : 69261
C6H4(OH)COONa
CAS#: 54-21-7 F.W.: 160.10
Mfg Item # : 69261
C6H4(OH)COONa
CAS#: 54-21-7 F.W.: 160.10
Silicon AA Standard, 1000ppm 125mL
Item #:
LCH/LC224007
Supplier #: LC224007
Supplier #: LC224007
Silicon AA Standard, 1000ppm (1mL = 1mg Si) 125mL CAS#13517-24-3
Sodium AA Standard, 1000ppm 500mL
Item #:
LCH/LC228101
Supplier #: LC228101
Supplier #: LC228101
Sodium AA Standard, 1000ppm (1mL = 1mg Na) 500mL CAS7647-14-5
Sulfide CHEMets® Kit, 0-1 & 1-10 ppm
Item #:
TMS/9866F03
Supplier #: 9866F03
Supplier #: 9866F03
CHEMetrics Part No. K-9510
Sulfides are naturally present in ground waters as a result of leaching from sulfur-containing mineral deposits. Surface waters do not usually contain high sulfide concentrations. Sulfides result from the decomposition of organic matter, from bacterial sulfate reduction under anaerobic conditions and from various chemical processes. The Methylene Blue Method References: USEPA Methods for Chemical Analysis of Water and Wastes, Method 376.2 (1983). APHA Standard Methods, 21st ed., Method 4500-S 2 -D (2005). CHEMetrics test kits measure total acid soluble sulfides and employ the methylene blue methodology. Sulfides react with dimethyl-p-phenylenediamine in the presence of ferric chloride to produce methylene blue. Results are expressed as ppm (mg/L) S.
Sulfides are naturally present in ground waters as a result of leaching from sulfur-containing mineral deposits. Surface waters do not usually contain high sulfide concentrations. Sulfides result from the decomposition of organic matter, from bacterial sulfate reduction under anaerobic conditions and from various chemical processes. The Methylene Blue Method References: USEPA Methods for Chemical Analysis of Water and Wastes, Method 376.2 (1983). APHA Standard Methods, 21st ed., Method 4500-S 2 -D (2005). CHEMetrics test kits measure total acid soluble sulfides and employ the methylene blue methodology. Sulfides react with dimethyl-p-phenylenediamine in the presence of ferric chloride to produce methylene blue. Results are expressed as ppm (mg/L) S.
Sodium Hydroxide, 50% w/w, Reagent 500mL
Item #:
LCH/LC241501
Supplier #: LC241501
Supplier #: LC241501
Sodium Hydroxide, 50% w/w, Reagent Grade 500mL CAS#1310-73-2
Sodium Hydroxide, 0.1N (0.1M) 1L
Item #:
LCH/LC242702
Supplier #: LC242702
Supplier #: LC242702
Labchem, Inc.
Mfg Item # : LC242702
CAS Number: 1310-73-2 Shelf Life (Months): 24 Traceable to NIST: Yes
Mfg Item # : LC242702
CAS Number: 1310-73-2 Shelf Life (Months): 24 Traceable to NIST: Yes
