Carboline Carboguard 891


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Carboline Carboguard 891 is a high solids, high-build potable water coating widely used for lining interior steel and concrete tanks, valves and pipes. Formulated for application at conventional builds (100 - 250 microns per coat) as well as high builds (250 microns per coat).

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Features and Benefits

  • Excellent film build and edge protection
  • VOC compliant to current AIM regulations
  • ANSI/NSF Std. 61 for potable water tanks. (Valid if manufactured at a certified location)
  • AWWA D102 Inside System 1 and 2.
  • Complies with EU 1935/2004 criteria for food contact.

Product Specification

Technical Data
Carboline Carboguard 891
Volume Solids: 75 ± 2%
Theoretical Coverage Rate: 5,0 m²/l at 150 µm
Allow for loss in mixing and application
Dry Film Thickness: 100 - 250 microns (3.94 - 9.84 mils) per coat
Do not exceed 425 microns per system for potable water applications.
Primer: Self-priming
Topcoat: May be coated with acrylics, epoxies, or polyurethanes for non-immersion applications.
VOC Values: As supplied: 214 g/l
Flash Point: Part A: 24°C
Part B: 27°C
Limitations: Epoxies lose gloss, discolour and eventually chalk in sunlight exposure.
Shelf Life: 36 months at 24°C
Storage Temperature and Humidity: 4°-43°C
0-95% Relative Humidity

Performance Data
Test Method System Results
ANS/NSF Std. 61 Blasted Steel 2cts. 891 Pass
AWWA C210 Specification Blasted Steel 2 cts. 891 Pass

Drying Times

Curing Schedule
Surface Temp Dry to Recoat Dry to Topcoat with Other Finishes Final Cure Immersion Maximum Recoat Time
10°C (50°F) 12 Hours 24 Hours NR 60 Days
16°C (61°F) 8 Hours 16 Hours 10 Days 30 Days
24°C (75°F) 4 Hours 8 Hours 5 Days 30 Days
32°C (90°F) 2 Hours 4 Hours 3 Days 15 Days

  • These times are based on a 100-150 micron dry film thickness.
  • Higher film thickness, insufficient ventilation or cooler temperatures will require longer cure times and could result in solvent entrapment and premature failure.
  • Excessive humidity or condensation on the surface during curing can interfere with the cure, can cause discolouration and may result in a surface haze. Any haze or blush must be removed by water washing before recoating.
  • If the maximum recoat time is exceeded, the surface must be abraded by sweep blasting or sanding prior to the application of additional coats.
  • For force curing, contact Rawlins on Tech - 0113 2455450 (option 2) or [email protected] Sales - 0113 2455450 or [email protected] for specific requirements.
  • Final cure temperatures below 16°C are not recommended for tank linings.

Surface Preparation


  • Surfaces must be clean and dry.
  • Employ adequate methods to remove dirt, dust, oil, and all other contaminants that could interfere with adhesion of the coating.


  • Immersion: ISO 8501-1 Sa 2½
  • Non-Immersion: ISO 8501-1 Sa 2
  • Surface Profile: 40-75 microns

Concrete or CMU

  • Immersion: Concrete must be cured 28 days at 24°C and 50% relative humidity or equivalent.
  • Prepare surfaces in accordance with ASTM D4258 Surface Cleaning of Concrete and ASTM D4259 Abrading Concrete.
  • Voids in concrete may require surfacing.

Application Methods

Product Information
Mixing: Power mix separately, then combine and power mix. DO NOT MIX PARTIAL KITS.
Thinning: Spray: Up to 6% with Thinner 2 (NSF Std.61 approved)
Brush: Up to 13% with Thinner 33 (Non-NSF Std.61)
Roller: Up to 13% with Thinner 33 (Non-NSF Std.61)
Use of thinners other than those supplied or recommended by Carboline may adversely affect product performance and void product warranty, whether expressed or implied.
Ratio: 1:1 Ratio (A to B)
Pot Life: Material begins to lose film build in 90 minutes at 24°C, and less at higher temperatures.
Spray Application (General) This is a high solids coating and may require adjustments in spray techniques. Wet film thickness is easily and quickly achieved.
Conventional Spray Pressure pot equipped with dual regulators, 3/8” I.D. minimum material hose, .070” I.D. fluid tip and appropriate air cap.
Airless Spray: Pump Ratio: 30:1 (min.)
GPM Output: 3.0 (min)
Material Hose: 3/8” I.D. (min)
Tip Size: 0.017”-0.021”
Output PSI: 2100-2300
Filter Size: 60 mesh
Brush and Roller (General): Not recommended for tank lining applications except when striping welds. Multiple coats may be required to obtain desired appearance, recommended dry film thickness and adequate hiding. Avoid excessive re-brushing or re-rolling. For best results, tie-in within 10 minutes at 24°C.
Brush: Use a medium bristle brush
Roller: Use a short-nap synthetic roller cover with phenolic core

Application Conditions

Product Conditions
Condition Material Surface Ambient Humidity
Minimum 10°C (50°F) 10°C (50°F) 10°C (50°F) 0%
Maximum 32°C (90°F) 52°C (126°F) 43°C (109°F) 85%

  • Industry standards are for substrate temperatures to be 3°C above the dew point.
  • Condensation due to substrate temperatures below the dew point can interfere with proper adhesion to the substrate.
  • Special application techniques may be required above or below normal application conditions.

Health and Safety

Clean Up

  • Use Thinner 2 or Acetone
  • In case of spillage, absorb and dispose of in accordance with local applicable regulations.


  • Read and follow all caution statements on this product data sheet and on the SDS for this product.
  • Employ normal workmanlike safety precautions.
  • Hypersensitive persons should wear protective clothing, gloves and use protective cream on face, hands, and all exposed areas.


  • When used as a tank lining or in enclosed areas, thorough air circulation must be used during and after application until the coating is cured.
  • The ventilation system should be capable of preventing the solvent vapor concentration from reaching the lower explosion limit for the solvents used.


  • This product contains flammable solvents.
  • Keep away from sparks and open flames.
  • All electrical equipment and installations should be made and grounded in accordance with applicable regulations
  • In areas where explosion hazards exist, workmen should be required to use nonferrous tools and wear conductive and non-sparking shoes.
  • Refer to the product and safety data sheet in the attachments section above for further details.
Product Details

Data sheet

For Use On
Steel, Concrete
Application Method
Brush, Roller, Spray, Airless Spray
Standard / Ready Mixed, Fully Tintable
Single, Two or Three Pack
Product Certifications
AWWA C210 for use on interior of steel water pipe, Complies with FDA 21CFR 175.300 criteria for food contact, Complies with EU 1935/2004 criteria for food contact
Pack Size
Mixing Ratio
1:1 Ratio (A to B)
5,0 m²/l at 150 µm
Recommended Thinner/Cleaner
Carboline Thinner 2
Compatible Topcoats
May be coated with acrylics, epoxies, or polyurethanes for non-immersion applications.
Max. Application Temperature
Material: 32°C (90°F) - Surface: 52°C (126°F) - Ambient: 43°C (109°F) - Humidity: 85%
Min. Application Temperature
Material: 10°C (50°F) - Surface: 10°C (50°F) - Ambient: 10°C (50°F) - Humidity: 0%
Solids by Volume
75 ± 2%
As supplied: 214 g/l
Shelf Life (from date of manufacture)
36 months at 24°C
Recommended Dry Film Thickness
100 - 250 microns (3.94 - 9.84 mils) per coat
UN Number (Activator)
UN Number (Base)
Dry to Recoat (at 10°C)
12 Hours - 60 Days
Pot Life
Material begins to lose film build in 90 minutes at 24°C, and less at higher temperatures.

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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