HMK® R67
Exterior Stone Cleaner
ACID BASE/HIGLY TOXIC
For Professional Use Only

APPLICATION:
A heavy duty, acid type cleaner for all rough/textured, and honed stone and masonry surfaces. HMK® R67 thoroughly removes decade-old dirt, grout/cement residue, lime and calcium deposits, rust, etc. Do not use on building interiors or on polished surfaces. Avoid contact with glass and metal; acid/fumes will cause etching.

DIRECTIONS:
Always mix solution where spills can do no damage. Protect all adjacent non-masonry surfaces. Do a manageable area at a time. Thoroughly wet area to be cleaned. Apply R67 diluted 1:5 1:20 depending on dirt, and acid resistance of the stone/grout joint. Scrub lightly with brush to remove dirt. First rinse should be a flood rinse. Second rinse should be a neutralizing rinse using a solution of HMK® R55 Intensive Cleaner (or a pH 8-9 alkali solution) and water.

COVERAGE:
400 sqft., 36 square meters at full strength, 2000 sqft., 180 square meters per 1 liter (34 oz.) container diluted.

WARNING:
Chemical product. Contains Hydrofluoric Acid. Corrosive and Toxic. Avoid eye/skin contact. If exposed, wash/flush with water, and get medical attention. Reacts with metals/glass. Follow appropriate safety precautions when dealing with corrosives. At all times wear protective gear (gloves, masks, boots, etc.). Keep out of reach of children. See Material Safety Data Sheet.

PACKAGING:
1/4 liter cans (8.5 oz.) 25, 1 liter cans (34 oz.) 12 per case, 5 liter cans (5.68 qts.) 4 per case.

STORAGE:
1 liter cans (34 oz.) 12 per case, 5 liter cans (5.68 qts.) 4 per case.

TESTING:
Always test procedure first in an inconspicuous area to determine dilution rate, performance, and visual appearance, and acting time, so as not to harm the stone, since HMK® R67 is highly acidic.

DISCLAIMER:
Limitation of liability: The liability of HMK® for defective products and any claims for damages whatsoever is limited to the purchase price of the products. HMK® shall not be liable for any consequential damages. No other warranty or representation is made or implied.