fluorescent dyes is used to color-code during dna by changing the color
Sacrifice (or food).
vat dyes acid dyes
it was used by Romans to kill criminals like way back in the biblical days
they were used during the pre-linch prayer period. strictly arabian.
There are other dyes such as Safranin, and Crystal Violet that may be used.
While the dye powder used to make pysanka dyes can be quite toxic (if inhaled), the dyes themselves are not. You can pour them down the drain.
dyes are used for staining and killing microbes
acidic dyes such as eosin, acid fuchsin, and nigrosin
Aniline dyes and fluorescent dyes are both used.
that most cells are negatively charged.
What are the raw material used to manufacture azo dyes
Dyes are used to Color the Candles. You can buy Candle Dyes in different forms such as Dye Blocks, Dye Chips, Or Liquid Dyes.
can dyes other than methylene blue be used for direct staining?
Chromatography is the method used to separate a mixture of dyes or inks.
A mix of animal fat andbeechwoodash was used for red dye.Saffronwas used for gold/blond dye. Leeches fermented invinegarfor 40 days were suggested for black dye. Henna was also used. Dyes were applied throughpowders, gels and bleach. Dyes were popular among women, but whenappliedfrequently, they made the hair weaker. Christianwriter Tertullian wrote about how dyes were harmful for theheadand how they burnt the scalp.
You are not meant to!
Now, synthetic dyes are still used for dying fabrics, but they are also used for paper, food, clothes and yarn.
Natural dyes were traditionally used in the 15th century for coloring clothing of the wealthy only to highlight their importance or wealth.
Oil lamps were used for light in Biblical times.
Basic dyes are used to stain bacteria because most bacteria is negatively charged, so positively charged basic dyes stick to bacteria walls. Basic dyes include crystal violet, methylene blue, safranin, malachite green.
in ancient Mexico they used the red chocineal beetle grounded down by hand. Now a days we use synthetic dyes, or natural dyes, but not for red food colouring. Pandan is naturally used as green food coloring and Butterfly pea for blue food dye. :)