gé lán shì rǎn sè fǎ
Gram stain (used to distinguished two different kinds of bacteria)
革
gé
animal hide
兰
lán
abbr. for Lanzhou 蘭州|兰州[Lan2 zhou1], Gansu
氏
shì
(bound form) family name; surname (as in 王氏[Wang2 shi4] "the Wang clan")
染
rǎn
to dye
色
sè
color
法
fǎ
old variant of 法[fa3]