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Ships within 48 hours · Estimated delivery Oct 22 - Oct 27
but has called Montréal his home since 2011
top-quality gum arabic
All the richness of watercolor in a single set
Customizable raw cardboard covers add a handcrafted feel
pH Testing Pen pebeo-acrylique but has called Montréal hisThe Lineco pH Testing Pen is an easy, convenient method for testing pH levels in paper and cardboard. Simply draw a line and instantly determine the answer. The red chlorophenol indicator solution turns a definite purple colour on any paper with a pH of 6. 5 or higher. Any other colour would indicate a material most likely unsuitable for conservation purposes.
US$ 14.99
US$ 19.99
US$ 99.99
