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.
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.
Number of Components
One
Volume Solids
62.0 ± 2.0% (mixed)
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
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.
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 No. 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 No. 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.
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)
Theoretical Coverage
996 mil sq ft/gal (24.4 m²/L at 25 microns). See APPLICATION for coverage rates.
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