Rosaniline, Basic Violet 14, Mangenta I, p-Fuchsin.
For: Ziehl - Neelsen and Kinyoun's stains for acid fast organisms; PA stain for mucosubstances; Feulgen stain for nuclear DNA; Endo media.Total dye content ~85%.
Berkowitz et al., Selective staining on nervous tissue for light microscopy following preparation for electron microscopy. J.Histo-chem.Cytochem., 16,808 (1968). Sato T. and Shamoto M., A simple rapid polychrome stain for epoxy-embedded tissue. Stain Technol.,48,223 (1973)

Malachite Green Oxalate.
Used as a bacteria stain and counter-stain for botanical material.

Purity 98% B.P. 177-180^oC
Accelerator for polymerisation of epoxy resins. This is now preferred over DMP-30 and DMAE. Use 2.5-3% which is twice as much as DMP-30 and 25% more than DMAE. Note that BDMA is not suitable when curing resin by microwave. Use DMP-30 in lieu.

For staining synapses.
Pfenninger. K., Sandri, C., Albert K., and Eugster, C.H.Contribution of the problem of structural organization of the presynaptic area.Brain Res., 12:10 (1969).

Crystalline
Bismuth Oxynitrate Hydrate.
Bismuth staining for light and electron microscopy.
Locke M. and Huie P., Tissue & Cell, 9,347 (1977)
Brown G.L. and Locke M., ibid. 10,365 (1978)

Brilliant Blue C
For use in the reticulum of immature red blood cells and platelets. Minimum dye content 50%.

Basic Green 1; Emerald Green
For use in determining the presence of the colon organisms in drinking water and as a bacteriostatic agent. Minimum dye content 85%.

Indicator Dye
Free acid, high purity, additive to various media for colour indication of pH.

BUTVAR B-98 support films are mechanically stable, electron-transparent, and have minimum intrinsic structure. Their hydrophilic nature facilitates the spreading of the sections allowing even staining on the surface. This film can resist an intense electron beam during focusing and photography at high magnifications, or with the beam at cross-over. The mechanical stability is appreciated when mounting freeze- fractured replicas or serial sections, especially when slotted grids are used.