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pH Papers Fil-Chern Inc., Paul Frank Div. Raleigh, N.C. Completely accurate and reproducible pH readings for all types of plating baths are available with narrow-range pH pa• pers by Fil-Chem. Using a simple dip• and-read method these easy-to-use, non• hazardous strips provide 100% accurate pH measurement in seconds, eliminating the need for costly, time-consuming lab- oratory work. The papers are available in both colorimetric ranges and e1ectromet• ric ranges designed specifically for nickel plating. Also available is Tridica• tor, the original wide-range I-II pH pa• per. The high-quality paper, which is ide• ally suited for monitoring wastestreams. is impregnated with super-refined indi• cators, which yield easy-to-read results readable to within 0.25 pH. Circle 411 on the reader service card Dewatering Presses Goodnature Products Inc. Buffalo, N. Y. Goodnature's line of low-cost dewa• tering presses for the electroplating and metal-finishing industry utilize mechanical pressure from hydraulic cylinders to squeeze liquid out of metal hydroxide sludges. As a result cycle times are drastically reduced and range from 10 to 20 min. Cake solids of 500/r or more are attainable in minutes. Ca- pacitities of 0.1 to 35 of dry cake throughput per hour are available. Stainless steel or powder-coated con• struction makes the presses durable and corrosion resistant. The filter bags. housed in the pressing chamber. do not need to be full for the presses to run, providing flexibility in batch sizes. Circle 412 on the reader service card Waste Treatment S stems '1 - 300 GPM flow 'Continuous flow or batch treatment ·Skid mounted or component installation in your plant 'Systems include drawings and EPA paperwork ·EPA compliance our specialty Sludge Dryers. 1- 75 OJ. ft. capacity ·Uses low cost steam. hot water or electrical heat source ·Stainless steel internal parts ·Reduces sludge volume up to 75% 'Space saving design allows unit to fit under the filter press or elsewhere in the plant 'Meets EPA requirement for sludge reduction Clarifiers· 5- 1000 GPM flow ·Parallel plate design for efficient solids settling with removable plate racks 'Compact size with low height 'Cone bottom for sludge storage ·Floculation tank with mixer is standard 'Optional catwalk and ladder available ·Heavy duty epoxy coated steel construction 'Shipped fully assembled .Meets EPA discharge limits for industrial waste water Low Prices Fast Delivery 777 E 82 St • .. Cleveland, Ohio 44103 216-881-7900 • Fax: 216-881-8950 E-MAIL: [email protected] L- WEBSITE: http://www.metchem.com Eilter Presses .5 - 200 cu. ft. caoacitv 'Automatic hydraulic closure-6r our cost saving manual closure ·Totally air operated 'Heavy duly steel construction ·Polypro gasketed or diaphragm membrane plates 'Corner or center feed 'Standard sizes or custom built to your specs ·Shipped fully assembled ·Easily expanded 'Used in EPA approved treatment systems L- -= --' • Circle 036 on reader information card 56 METAL FINISHING • DECEMBER 1998
![PH. A- What is pH? A1.pH represents the concentration of H + in a solution A2.pH = the power of Hydrogen pH = -log 10 [H + ] A3.Lower pH means higher.](https://static.documents.pub/doc/80x56/56649c595503460f94902c20/ph-a-what-is-ph-a1ph-represents-the-concentration-of-h-in-a-solution.jpg)
