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and detailed work
while improving your precision and focus
but has called Montréal his home since 2011
All the richness of watercolor in a single set
pH Testing Pen pebeo-acrylique and detailed workThe 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.
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