Basic Lab Operation Flashcards
(22 cards)
Type of balance having max capacity of 150-200g with 1mg precision
Macro Balance
Type of baance having 10-30g capacity with 0.01mg precision
Semi micro balance
Type of balance with 1-3g capacity having 0.001mg precision
Micro balance
The mas of an empty sampe container.
Tare
The process of setting a balance to zero in the presence of the tare
Taring
Most balances permit taring up to ___% of the capacity of the balance
100%
Micro L
10^-6L or 10^-3mL
____ is marked by a manufacturer indicating the manner of calibration and temperature at whoch it applies
Volumetric equipment
Volumetric flask are calibrated to_____
Contain
_____ and _____ are calibrated to deliver certain or specified volume
Pipets ang burets
_____ and _____ are calibrated to deliver certain or specified volume
Pipets ang burets
This permit the transfer of accurately known volume from one container to another
Pipets
_____ pipets are calibrated to permit delivery of any voume up to maximum capacity from 0.1-25mL
Measuring pipet
____ deivers a single and fixed volume between 0.5-200mL
Volumetric pipet
This pipets are used if the liquids left in the pipet has allteady accounted
TD
This pipets are used if the liquids eft in the pipet must be blown off the pipet
To contain
This VF are calibrated as _____ and they are distinguished by two reference lines on the neck. If the delivery of the stated volume is desired, the flask is filled to the upper line
To deliver basis
These are used for measuring and comparing densities or specific gravity of liquids and solids.
Pycnometers
The use of _____ helps to avoid leaks, spills of potential harmful and often valuable substances.
Jointed glassware
T 19/22
19 is the size of
Widest point
T 19/22
22 IS THE
Length of the joint
Beakers, flasks, and crucibles should be washed with a _______ solution and then rinsed initially with large amount of tap water and small portion of deionized water
Hot detergent
