Lineco PH Testing Pen

£12.98Save 31%
£8.95

Compare 3 seller prices

Retailer
Price
eBay
eBayBest
£8.95
Go Hardware
Go Hardware
4.9
£11.49
LION Picture Framing Supplies
LION Picture Framing S
4.9
£12.98
This site contains affiliate links for which we may be compensated.
Lineco PH Testing Pen£8.95
Buy Now

Acidic or alkaline? Now you can distinguish between what paper or board is suitable for conservation with the stroke of a pen. The solution will turn a shade of purple on paper with a pH of 6.5 or higher. Any other color would indicate a pH lower than 6.5, thereby acidic and unsuitable for artwork that is meant to last.

Paper can be respectably long lived if is pH is as low as 6.0, especially if it is well made and carefully used and stored. In order to last for centuries in today's polluted air, it must have an alkaline reserve and this usually means a pH of 7.0 or greater.