References

Soto – Leader In Digester Scale Control - Treats 26 Digesters – North America

U.S. Mills: Were severe scaling digesters - now all goals achieved

1.International Paper - Eastover - Soto treats both K1 and K2 digesters replacing Drewfax and Hercules. With Soto, the mill ran the digester between annual outages for the first time with no loss in circulation flows. Kenneth Kibler - 803-353-7437

2. International Paper - Prattville - Soto treats both K1 and K2 digesters - Soto replaced Drew and has run the process between annual outages for the first time with no scaling issues. Scott Dinkle - 334-361-5711

3.International Paper - Riegelwood - Soto replaced Hercules running digester annual to annual. Mike Mintz - 910-655-2213

4.International Paper – Pineville – Soto replaced Drewfax 342 on two digesters Danny Floyd- 318-441-4100

5.International Paper Mansfield – 3 digesters Soto replaced Chemstone / Drewfax 346 (these are the exact same product) Jeff Suelzer – 318-871-1281

6.International Paper Ticonderoga – Replaced Nalco. Single vessel hydraulic, Soto has run this digester as long as 12 months. Steve Dunn – 518-585-5742

7.International Paper Pensacola – Replaced Chemstone. Todd Lewick – 850-968-425

8.International Paper Pine Hill – Treating Green Liquor digester with extreme scaling problems. Chuck Neese – 334-963-2345

9.Mead Mahrt - The mill has just run the digester 16 months between annual outages for the first time with no loss of circulation flow. The mill tested performance with Soto, Drew, Kemira, and Nalco. John Lobley - 334-855-5667

10.Bowater Catawba – The largest expansion digester in North America – Soto selected and has assisted with solving scaling issues with this unique digester. Frank Hart - 803-981-8596

11.Domtar Kingsport – Replaced Drewfax 342 Jeff Chamberlin – 423-247-7111

12.Domtar - Bennettsville - RDH Cook - Soto has been applying the Sosperse 400W to each mode of the batch RDH process via the white and black liquor. Currently the liquor heaters have run exceptional well uninterrupted and the RDH digester screens are no longer an issue. During a six- month inspection the screens were remarkably clean Bill Seamans - 843-479-4636 ext. 415

13.Weyerhaeuser New Bern - Soto replaced Clearwater – evaluating the trial John Chrise – 252-633-7544

Canada – All were severe scaling, softwood, single vessel hydraulic digester:

1. Weyerhaeuser, Grande Prairie – Soto replaced Hercules and ran digester one year for first time. Lisa Hall - 780-539-8646

2. Pope And Talbot – Soto replaced Drewfax 342 with better results Kevin Heller – 250-722-3211

3. Western Pulp, Woodfiber - Soto replaced Ashland Drewfax 342 Dave Ingram - 604-892-4184

4. Norske Canada - Soto replaced Drewfax 342 Andy Hollebakken - 250-246-6338

5. Tembec - Soto replaced Drewfax 342 Darrell Booker - 250-422-4046

6. West Fraser – Cariboo – Soto replaced Drewfax 342 - They also tried the Chemstone phosphonate /chelant product DSC400 and it did not work. Steve Bird - 250-992-0200

7. Canadian Forest Products - Soto replaced Drewfax 342 on all three Canfor mills: Northwood - Glen Cabat – 250-962-3728 PG Pulp – Pete Lovell 250-561-4415 Intercon – replaced Drewfax 342- Nels Kristensen 250-563-0161

8. Bowater – Thunder Bay – Ontario – Soto replaced Drewfax 342 Mike Stranges – 807-475-2731

Note : PG Pulp tested Soto versus Drewfax versus a phosphonate for an extended period of time on two sister digesters, side by side, same wood supply, same liquor cycle, and same digester temperatures. Soto performed better. All of the Soto’s customers that want to run 18 months between outages are doing so with no scaling issues with the in line drainers, top separators, cook screens, headers, heaters and no drop of circulation flows.

“LEADERS IN PROBLEM SOLVING”