75 Results for: "merck indicators"

Supplier: SIGMA ALDRICH MICROSCOPY

3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4′,4′′-disulfonic acid sodium salt is a chelating agent for ferrous iron. It is also known as Ferrozine.

Supplier: SIGMA ALDRICH MICROSCOPY

Xylenol orange tetrasodium salt is a fluorochrome acid dye with complexing and chelating properties that make it useful as an indicator in the spectrophotometric detection and assay of metal ions such as calcium, cadmium, bismuth, zinc, lead, and mercury. Its tetrasodium salt especially is used as an indicator in metal titrations. It changes color from yellow to red between pH 6.4 to 10.4. It has six potentially anionic substituents, one being sulfonate, and is anionic under staining conditions and during most laboratory applications.

Supplier: SIGMA ALDRICH MICROSCOPY

Sudan Red 7B has been used to stain the fat bodies of Ostrinia nubilalis (Hübner) larvae. Sudan red 7B, also known as fat red, is a non-fluorescent stain.[2] It is effectively used to stain lipids and is used to indicate the presence of suberin in cell walls.[2][3][4] Sudan red 7B acts as a marker for formosan subterranean termite, Coptotermes fornosanus Shiraki.

Supplier: SIGMA ALDRICH MICROSCOPY

Bromocresol green is a sulfonephthalein dye. It is mainly used for measuring serum albumin. In acidic conditions, bromocresol green interacts with albumin, thereby resulting in an increase in absorbance at 630 nm. The change in absorbance is linked with the concentration of albumin. Bromocresol Green is also a pH indicator, changing from yellow (pH 3.8) to blue color (5.4). It is widely used as a colloidal pigment.

Supplier: SIGMA ALDRICH MICROSCOPY

Bromocresol Green (BCG), also known as bromcresol green, is a synthetic, anionic, triphenylmethane dye belonging to the phthalein and sulphonphthalein dyes group. It is commonly used as a pH indicator as it changes colour from yellow to blue-green at pH 3,8 to 5,4. The monosodium salt of bromocresol green is highly ionisable in water. The dye at a higher pH level produces a large and weakly lipophilic dianion.

Supplier: SIGMA ALDRICH MICROSCOPY

Bromothymol Blue sodium salt has been used as a pH indicator in the yeast growth media (YPD, yeast extract peptone dextrose).

Supplier: Merck

Methylene blue is a heterocyclic aromatic chemical compound used as a cationic dye. It is used as a redox indication in analytical chemistry. Methylene blue is a component of a number of staining protocols such as Wright′s stain and Jenner′s stain for microscopic evaluation.

Supplier: Merck

TOC INDICATOR UPGRADE KIT 1 * 1 items

Supplier: Merck

INDICATING DRYING CARTRIDGE,EA 1 * 1 Each

Supplier: Merck

PM INDICATOR AGAR, FOR MICROBIOLOGY 1 * 500 g

Supplier: Merck

STERILITY INDICATOR (STEAM STERILIZATION 1 * 25 Tests

Supplier: Merck

TLC Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 5 cm x 10 cm, silica gel 60 matrix, binder, Polymeric, fluorescent indic ator 1 * 1 Each

Supplier: Merck

TLC AL SI60 F254 WITH INDICATOR 20X20CM 1 * 25 items

Supplier: Merck

SIMPLATE YEAST + MOLD COLOR INDICATOR, M 1 * 1 KIT

Supplier: Merck

STERILITY INDICATOR (RADIATION STERILIZA 1 * 25 Tests

Supplier: Merck

ANAEROB INDICATOR TEST, PGE. WITH 100 TEST STRIPS* 1 * 100 items

Supplier: Merck

TLC Aluminum Sheets from Merck KGaA, Darmstadt, Germany, L x W 20 cm x 20 cm, aluminum oxide matrix, binder, not applicable, fluores cent indicator 1 * 25 items

Supplier: Merck

TLC Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 20 cm x 20 cm, PEI-cellulose, matrix, binder: no, fluorescent indicator 1 * 25 items

Supplier: Merck

TLC Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 5 cm x 20 cm, silica gel 60 matrix, binder, Polymeric, fluorescent indic ator 1 * 100 items

Supplier: Merck

HPTLC (High Performance TLC) Aluminum Sheets from Merck KGaA, Darmstadt, Germany, L x W 20 cm x 20 cm, silica gel 60 matrix, binder, Polymeric, fluorescent indicator: no 1 * 25 items

Supplier: Merck

TLC Plastic Sheets from Merck KGaA, Darmstadt, Germany, L x W 20 cm x 20 cm, PEI-cellulose, matrix, binder, not applicable, fluoresc ent indicator 1 * 25 items

Supplier: Merck

PHTHALATE ESTERS MIX AT INDICATED CONCEN TRATIONS IN ACETONE 1 * 4 mL

Supplier: Merck

PTLC (Preparative TLC) Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 20 cm x 20 cm, silica gel 60 matrix, binder, Polymeri c, fluorescent indicator 1 * 12 items

Supplier: Merck

HPTLC (High Performance TLC) Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 10 cm x 10 cm, silica gel 60 matrix, binder, Po lymeric, fluorescent indicator: no 1 * 25 items

Supplier: Merck

HPTLC (High Performance TLC) Aluminum Sheets from Merck KGaA, Darmstadt, Germany, L x W 20 cm x 20 cm, silica gel 60 matrix (C18), b inder, Polymeric, fluorescent indicator 1 * 20 items

Supplier: Merck

HPTLC (High Performance TLC) Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 10 cm x 10 cm, silica gel 60 matrix, binder, Po lymeric, fluorescent indicator 1 * 100 items

Supplier: Merck

HPTLC (High Performance TLC) Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 10 cm x 20 cm, silica gel 60 matrix, binder, Po lymeric, fluorescent indicator 1 * 50 items

Supplier: Merck

TLC Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 20 cm x 20 cm, C18-silica gel 60 matrix, binder, Polymeric, fluorescent indicator 1 * 1 Each

Supplier: Merck

HPTLC (High Performance TLC) Glass Plates from Merck KGaA, Darmstadt, Germany, L x W 10 cm x 10 cm, silica gel 60 matrix, binder, Po lymeric, fluorescent indicator 1 * 25 items

Supplier: Merck

SILICA GEL/TLC-CARDS, 4X8CM, with fluorescent indicator 254 nm 1 * 50 items