This edition includes notes on an airgun incident in a school, examining autoclaves and pressure cookers, declining supplies of potassium and phosphorus, a theft of pestles from labs, and tips on cons.. more

words matched: airgun

This document is a make-it guide which describes how to mount the air-rifle on a wooden board to make it safe for use in science lessons. Also describes how to make the various accessories used in exp.. more

words matched: airgun