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

 

OLD GILBERT CHEMISTRY EXPERIMENT LAB 12026 SET W/FULL BOTTLES NR Click to View Image Album Click to View Image Album Click to View Image Album Click to View Image Album Click to View Image Album Click

 

Here is a Vintage Dietzgen Drafting Set made in Germany U.S.Zone-- Pennsylvania State University Special. It is in need of a good cleaning and it may be made of nickel or stainless steel. There are Fo

 

Up for Auction: Vintage Style Pearl-White and Gold Centura Opera Glasses 3X (J-E56 and J-B19). This item has been used but remains in great condition with no broken parts or cracks. The brand is fairl

 

Antique Alley "Meet Me in the Alley" .............Since 1991 1325 Matthews-Mint Hill Road - Matthews, NC 28105 Phone: 704-847-3003 Store Directions_____________________________________________________

 

Please read the item description and review the photos before bidding. This is a vintage apothecary balance scale. The item was acquired from the estate of a druggist and it is in good clean condition

 

Pre dating 1920 East Germany , This very rare set, found at a Estate sale with blow your mind with a straight face an line ask anything. ...

 

This is a Post Hemmi model 1452W slide rule in very good condition. It comes with a leather case and a box. This auction is for US bidders only. Winning bidder will pay $7.15 for Priority Mail Shippin

 

Teazle18 Store Antique/Vintage JEWELLERS LOUPE/Eye Glass - Has Two Magnifyers - Made From Horn

 

jamesforbes Store This is a nice little collection of 4 vintage clear glass chemists bottles which all have their labels on.The tallest stands at approx 6 inches and the smallest approx 4 inches.They