Sodium perborate is a white, granular solid which decomposes in an aqueous solution to hydrogen peroxide and sodium borate. Active oxygen content 10%. Melting point is 63 degrees Celsius. It's used in

 

Antique miniature folding stanley london drawing tool, measures when folded 60mm & when open fully 165mm. Also Comes with a handy leather pouch and Is in very good collectable condition. please vi

 

WELCOME! You are bidding on a lot of 2 pair of old optical specticals eye glasses. These seem to be in pretty good condition but the lenses may have some scratches. They need a really good cleaning. O

 

Old Advertising Medicine Tin - New Old Stock - With Original ContentsMcKesson's Sulphur Flowers Prepared by McKesson & Robbins - New York, Bridgeport, MontrealTin has cardboard sides, metal top an

 

Antique Microscope Slide by Clarke & Page. Marine Zoology. Protozoa. Haliphysema Tumanowiczii. A rare Foram parasitic on Crissia. Diatoms Isthmia etc. See images for condition. Excellent. I ALSO B

 

Up For Auction We Have A Vintage Mid Century Stellar brand German Made Nautical Ships Wheel Barometer. This Beautiful barometer has a mahogany wood finish, Porcelain Face, Brass casing, inner workings

 

THIS IS A VERY NICE SET OF 5 COAL MINE STICKERS. THEY ARE IN LIKE NEW CONDITION. PAY PAL ACCEPTED AND WILL ONLY SHIP TO USA. THANKS FOR YOUR INTEREST AND HAPPY BIDDING. ***NO RESERVE***

 

KEUFFEL & ESSER CO. 4153-1 Slide Rule w/ case 398 066398 398

 

cliftonhouse Store HERE ON OFFER IS A VERY RARE ANDERSONS IMPROVED SLIDE RULE. MADE BY L.P.CASELLA, LONDON ABOUT THE YEAR 1900. HAS GREAT BRITAIN PATENT FOR 30/8/04 AND U.S.A. PATENT 30/8/04. COMES WI

 

VINTAGE NEW IN BOX ACETYLENE HUNTER'S LAMP WITH BLINDER BEAM AUTO LITE CARBIDE LAMP AND CAP SPORTSMAN SPECIAL WITH THE BLINDER BEAM ADJUSTABLE CAP RIBBED REFLECTOR NEW UNUSED CONDITION ORIGINAL BOX AL