Safety
Laboratory Informatics & Math
Picture This
Instrumentation
Fixatives
100
The red diamond on the NFPA chemical hazard label indicates this
Flammability of reagents
100
Each patient sample should have at least this many unique identifiers
2 unique identifiers
100
Washboarding
100
A microscope with two eyepieces is called this
Binocular
100
Osmium tetroxide is used for this type of microscopy
Electron microscopy
200
This type of fire extinguisher should be used on fires involving electrical equipment
Class C. They need to be extinguished with a non conductive media containing halon, carbon dioxide or dry chemicals
200
Barcodes that are printed on cassettes can be either 2D or this
Linear
200
The temperature of the paraffin on a processor should be kept at this above the melting point
2-4 degrees C
200
Large specimens under-go this technical during grossing to ensure full penetration of fixatives
Bread-loafing
300
The PEL for formaldehyde over an 8 hour period is this
0.75 ppm
300
A reagent is considered this if the pH is 10.0
Basic
300
Cryostats are operated at this temperature for most tissues
-20 degrees C
300
Michel medium and PBS solutions are used for this
Transporting specimens over short distances
400
Development of a chemical hygiene plan is mandated under this Standard
The Laboratory Standard (Occupational Exposure to Hazardous Chemicals in Laboratories)
400
This is the formula to find percentage solutions
% desired:100 = g/mL needed:volume desired
400
The clearance angle should be kept at this degree
3-8 degrees
400
The Masson Trichrome stain uses this type of fixative technique with the Bouins solution
Post-fixation- a second fixative is performed to enhance a staining reaction
500
Silver nitrate is considered this type of hazard classification
Chemical hazard
500
10% formalin has a shelf life of this
6 months
500
This microtome holds the block stationary while the blade moves along the horizontal plane past the block face
Sliding microtome
500
This fixative consists of absolute ethyl alcohol, chloroform and glacial acetic acid
Carnoy Solution- lyses eyrthrocytes