pH Testing Pen pebeo-acrylique Customizable raw cardboard covers add

Customizable raw cardboard covers add a handcrafted feel

This set contains 24 PITT Pastel Pencils in assorted colours

All the richness of watercolor in a single set

but has called Montréal his home since 2011

pH Testing Pen pebeo-acrylique Customizable raw cardboard covers addThe 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.