Medical bubbles, and especially the opened vial is very fragile, and spill their contents sometimes very simple. To avoid this, use a “tortilla” of clay: recessed in her glass bottoms of tanks holding up, as if glued.
V. GOLOVASHIN, Rybnoe, Ryazan region.
Recommend to read
CONVERTER PUSH-PULL
Summer — time for vacation and travel. During this period, there is a special need for a universal power supply for various mobile (and not only) household appliances. Such a...
A SMALL STEP FOR SMALL STEP…
Nearly five years, the ousting of John Holland, a private company in 1904 came to a natural end. Amateur inventor had left the firm and his place was taken by young and energetic...
