Hello! What means RH in the next phrase: "Store unexposed film at 50 to 70°F (10 to 20°C), at 30 to 50 percent RH"?
2007-07-29 21:20:21 · 6 answers · asked by Amber 2 in Science & Mathematics ➔ Other - Science
RH in this case stands for Relative Humidity. Just think "Store in a cool, dry place."
The best thing is to store it in the refrigerator.
2007-07-30 13:55:22 · answer #1 · answered by aviophage 7 · 0⤊ 0⤋
Rh blood types were discovered in 1940 by Karl Landsteiner and Alexander Wiener. The Rh system was named after rhesus monkeys, since they were initially used in the research to make the antiserum for typing blood samples. If the antiserum agglutinates your red cells, you are Rh+ . If it doesn't, you are Rh- .
2016-05-17 21:10:45 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Here RH means relative humidity
2007-07-29 21:23:12 · answer #3 · answered by ? 2 · 1⤊ 0⤋
RH = Relative Humidity.
That is, the film shouldn't be stored in an area that's either too dry, or too damp.
2007-07-29 21:24:47 · answer #4 · answered by AndrewG 7 · 1⤊ 0⤋
Relative humidity. Other possibilities, not allowed by this context, would be right hand, and Rhesus.
2007-07-29 21:26:16 · answer #5 · answered by Anonymous · 0⤊ 0⤋
room temperature
2007-07-29 21:24:07 · answer #6 · answered by curious1 2 · 0⤊ 4⤋