Series 94-H2O
Hydro-Zinc MCU
Generic Type
Aromatic Urethane, Zinc-Rich
Common Usage
A single-component, moisture-cured, zinc-rich primer for steel structures, including the interior and exterior of steel potable water tanks. Commonly used in commercial, industrial, and marine markets in various applications to provide outstanding long-term corrosion resistance when used as a primer in conjunction with other Tnemec coatings. Series 94-H2O has no maximum recoat time, cures quickly and offers rapid recoat at surface temperatures down to 35°F (2°C). Note: When used in conjunction with cathodic protection, anodes or impressed current systems should not provide current demand more negative than –1.05 volts relative to a copper–copper sulfate reference electrode half-cell.
Special Qualifications
Certified by NSF International in accordance with NSF/ANSI/CAN Std. 61 and the extraction requirements of NSF/ANSI/CAN 600. Reference Tnemec’s certified product listing at www.nsf.org for additional details.
Meets zinc-rich primer requirements of the latest edition of AWWA D102 Standard for Inside System No. 3, 5, and 6 and Outside System No. 3, 4, and 6. Series 94-H2O uses a zinc pigment which meets the requirements of ASTM D 520 Type III and contains less than 0.002% lead.
Series 94-H2O meets the requirements of LEED-Low-Emitting Materials, Collaborative for High-Performance Schools-Paints & Coatings, WELL Building Standard-VOC Restrictions, and Living Building Challenge–Healthy Interior Performance. Contact your Tnemec representative for more information.
This product is part of a coating system tested in accordance with ISO 12944-6 (2018). Contact your Tnemec representative for coating system test results.
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Colors
- Greenish-Gray
View Available Colors
View available colors in our Color Tool; you can also select and request color swatches.
Theoretical Coverage
996 mil sq ft/gal (24.4 m²/L at 25 microns). See APPLICATION for coverage rates.
Topcoats
Interior: Series 21, 22, FC22, L140, L140F, N140, N140F, 215, 406.
Exterior: Series 66, L69, L69F, N69, N69F, 73, 115, V115, 156, 161, 215, 1026, 1028, 1029, 1080, 1081, 1094, 1095, 1096. Note: Certain topcoat colors may not provide one-coat hiding depending on the method of application. Contact your Tnemec representative. Note: Series 94-H2O must be exterior exposed for three days prior to topcoating with Series 1028 or 1029.
Number of Components
One
Recommended DFT
2.5 to 3.5 mils (65 to 90 microns) per coat. Note: Reference the NSF website at www.nsf.org for details on the maximum allowable DFT.
HAPS
Unthinned: 1.68 lbs/gal solids
Thinned 15% (No. 49 Thinner): 1.68 lbs/gal solids
Thinned 10% (No. 2 Thinner): 2.84 lbs/gal solids
Curing Time
| Temperature † | To Handle • | To Recoat • |
|---|---|---|
| 75°F (24°C) | 2 hours | 8 hours |
| 55°F (11°C) | 4 hours | 12 hours |
| 35°F (2°C) | 6 hours | 16 hours |
† 50% relative humidity. • Without the addition of Series 44-710 Urethane Accelerator.
Note: Refer to product listings on www.nsf.org for specific potable water return to service information. Curing time will vary with surface temperature, humidity, and film thickness. Ventilation: When used in enclosed areas, provide adequate ventilation during application and cure. Note: For faster curing, low humidity, and/or low-temperature applications, add Series 44-710 Urethane Accelerator (see separate product data sheet). Note: For cure times to immersion service, reference the specified Tnemec interior topcoat product data sheet.
Volume Solids
62.0 ± 2.0% (mixed)
Volatile Organic Compounds
Unthinned: 0.74 lbs/gallon (89 grams/litre)
Thinned 15% (No. 49 Thinner): 0.74 lbs/gallon (89 grams/litre)
Thinned 10% (No. 2 Thinner): 1.56 lbs/gallon (187 grams/litre)
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