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Chrome Lignosulfonate


CLS® is DXO's registered trade name for chrome ligno-sulfonate which has been used as the industry standard for many years. CLS® is a versatile and highly effective chrome lignosulfonate drilling mud conditioner.

CLS® is produced from the finest softwood liquor. It is the dried solids prepared from the liquor recovered from the acid sulfite pulping of hemlock and white fir.

Typical Application

CLS® provides optimum dispersion and filtration properties in all water-based drilling muds. CLS® will provide for downhole fluid loss control and for deflocculation of clay solids. CLS® treated muds are stable at temperatures in excess of 350°F.

Dosage Range

2-8 lbs/bbl

Typical Properties


Free flowing powder






100% in water


Moisture Content

5 - 7 %


Bulk Density

30 lbs/cu. ft.


5.0 - 7.5 measured as a 10% sol'n.


0.5 max (wt.)


3.0 - 4.0 (wt. )


CLS® is available in 50 pound, multi-walled, moisture proof paper bags. Super sacks are available upon request.


The information and data herein are believed to be accurate and have been compiled from sources believed to be reliable. It is offered for your consideration, investigation and verification. Buyer assumes all risk of use. DX Oilfield Products, Inc. will not be liable for claims relating to any party's use of our reliance on information and data contained herein regardless of whether it is claimed that the information or data are inaccurate, incomplete or otherwise misleading.

     DX Oilfield Products, LLC, 300 Jackson Hill Street, Houston, Texas 77007

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