Keson® 105R ProChalk® Semi-Permanent Waterproof Marking Chalk, Red, 5 lb

Keson® ProChalk® Semi-Permanent Waterproof Marking Chalk, Red, 5 lb Marking Chalk, Semi-Permanent Waterproof, Red, 5 lb Capacity, Odorless, 85 to 90% Calcium Carbonate/10 to 15% Red Iron Oxide/0.1 to 1% Silica.

Features

• Weight: 5
• Appearance: Odorless Red Powder
• pH: 5 - 8 (5% Solution)
• Specific Gravity (H2O=1): 4.3