0800 466 378 (NZ)
+64 9 415 4588
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Klen Green Devil

GREEN DEVIL is a liquid acid detergent ideal for removal of efflorescence stains from all masonry and stone surfaces prior to sealing and protection.

GREEN DEVIL is also suitable for removal of grout smear from terracotta and sandstone. It should not be used on coloured concrete pavers.



For light duty cleaning dilute 1 part GREEN DEVIL to 10 or 20 parts water. For moderate cleaning use 1 part GREEN DEVIL to 5 parts of water. For heavy buildup dilute 1:1 with water. Apply evenly to surface to be cleaned, leave for 1 – 2 minutes and then agitate or scrub the area. Rinse off with copious amounts of FRESH LIME DETERGENT and water. DO NOT ALLOW TO DRY BEFORE RINSING. (External areas rinse with a hose).

Building Industry Applications:

Dilute 1 part GREEN DEVIL with 10 20 parts of water for most applications. For problem areas dilute 1 part with 5 10 parts of water. Apply solution freely and evenly to surface and allow a contact time of 1 2 minutes and then agitate or scrub area. Rinse with copious amounts of FRESH LIME DETERGENT and water. DO NOT ALLOW TO DRY BEFORE RINSING. Apply neutraliser solution in accordance with label and allow appropriate contact time before rinsing.


GREEN DEVIL is a Schedule 6 Poison. GREEN DEVIL is highly corrosive and users should prevent skin and eye contact or breathing spray mist and vapours. For full information obtain the appropriate Material Safety Data Sheets from KLEN INTERNATIONAL.


Since the use of this product is beyond the control of either seller or manufacturer, their only obligation shall be to replace any quantity of product which is proven defective. They cannot assume any risk or liability in excess of the purchase price of the product itself, which does not include labour or any consequential damages resulting from the use of this product. Determining the suitability of this product for any intended use shall be solely the responsibility of the user. ALWAYS TEST FIRST.


Established in 1982, the SSL has grown and developed over the years to it’s present status, with two Companies now operating.. These being SSL Distributors Ltd.(previously known as Sunbather Systems Ltd), and  Ultra Corporation Ltd.


Free Phone 0800 466 378 (New Zealand)
Tel.: +64 9 415 4588