1363 product(s) found for Lab Chemicals
25g Eosin B C.I. 45400
£17.75
Eosin B is a readily water-soluble, red dye with a green fluorescence ( Lambdamax. 514 nm), which is commonly used in histology and microbiology. The dye binds in the acidic pH range (pH 2.5 3.5) to proteins....
25g Eosin Y C.I. 45380
£9.99
Eosin Y is a dark red-brown powder which is often used as a counterstain in the haematoxylin and eosin method Biological Stain H & E Stain Cytoplasmic Stain C.I. 45380 Dye Content: 89% Molecular Formula:...
25g Erythrosin B C.I. 45430
£22.33
Commonly used in microscopy. It is a cytoplasmic stain, often used together with a nuclear stain such as haematoxylin or methylene blue. Biological Dye Cytoplasmic Stain C.I. 45430 Dye Content: 80% Molecular...
25g Evans Blue C.I.23860
£31.83
T-1824 or Evans Blue is an azo dye which has a very high affinity for serum albumin. Because of this, it can be useful in physiology in estimating the proportion of body water contained in blood plasma....
25g Gentian Violet BP80 C.I.42555
£14.19
C.I.42555 Dye Content: 97.6% Molecular Formula: C25H30ClN3 Molecular Weight: 407.99 g/mol Melting Point: 215 C Arsenic (As): 3ppm Heavy Metals (as Pb): 20ppm Sulphated Ash: 1.45% Insoluble Matter (Ethanol):...
25G Indigo Carmine ACS/USP C.I. 73015
£16.54
Indigo Carmine is a dark blue to purple powder. The primary use is as a pH indicator. It is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction....
25g Jenner Stain Powder
£19.53
Jenner Stain is a dark green powder and is commonly used to stain blood smears Biological Dye Stain for blood smears Appearance: Dark green powder Solubility: Opaque, dark blue solution IR Spectrum: Conforms...
25g Light Green SF (Yellowish) C.I. 42095
£41.65
Light Green S.F. is a deep purple powder and is often used to stain collagen in histological techniques. It is commonly used as a counterstain in the Masson Trichrome technique Biological Dye Staining...
25g Lipase from Porcine Pancreas
£62.98
Type II, 100-500 units/mg Protein (using olive oil (30 min incubation)) 30-90 units/mg protein (using triacetin) Units/mg protein: 30-90 (Triacetin) Units/mg Pretien: 100-500 (Olive Oil) Protein by biuret:...
25g L-Tyrosine 98.5-101.5% USP
£6.93
Tyrosine or 4-hydroxyphenylalanine, is one of the 22 amino acids that are used by cells to synthesize proteins. Synthesis Minimum Assay: 98.5- 101.5% Chloride (Cl) Max 400 ppm Sulfate Max 400 ppm Iron...
25g Malachite Green Oxalate Powder C.I. 42000
£20.58
Malachite Green Oxalate is often used as a counterstain in histological tissue sections and for staining bacterial polysaccharides and spores. Commonly used as a counter stain in the Ziehl-Neelsen procedure....
25g Martius Yellow Powder
£24.15
Martius yellow stains have been used to stain erythrocytes yellow so that they contrast well with red fibrin in trichrome staining methods such as Lendrum s Picro Mallory and Slidder s Martius, Scarlet...