Lab Safety & Lab 2: Microscope

ocular

lens nearest to the eye

nosepiece

permits interchange of low, medium, and high power objectives

arm

supports body tube and adjustment knobs.

Coarse adjustment

changes the distance between the slide and the objective to focus and image.

Base 

bears the weight of microscope

Iris Diaphragm

regulates amount of light going through specimen

Illuminator

provides a light source

Body Tube

keeps ocular and objective lens at proper distance from each other.

Pointer

found in ocular, can be moved by turning the black eyepiece.

Objectives

contains lenses of various magnification

Stage

supports slides

Stage Clips

holds slides steady

Fine adjustment

permits exact focusing

what is apropriate attire for lab

closed toed shoes

avoid dangling jewelry

long hair should be tied back

wear clothes that are expendable

Describe the sequence of actions involved in the PASS fire safety procedure.

The PASS procedure involves pulling the pin, aiming at the base of the fire, squeezing the handle, and sweeping side to side.

what are the requirements necessary for handling and cleaning a microscope

Carry with two hands — one on the arm, one under the base.

 Only clean lenses with optical lens wipes (never paper towels or microfiber cloths).

when storing away the microscope, what positition should the scanning lens be set at?

4x

where should the microscope be used after use ?

in the cabinets on the side of the class tables

What should be used in case of a fire.

Safety shower – for chemical spills or burning clothes.

Fire blanket – to smother flames on clothing or areas.

Fire extinguisher – for small lab fires