GE P&W Spectrus Microbiological Control User Manual
Spectrus* NX1100
Microbiological Control Agent
Fact Sheet
• Broad spectrum antimicrobial
• Patented blend minimizes microbial resistance
• Non-foaming, water-based
• Compatible with all corrosion and deposit con-
trol treatments
• Synergistic with halogen-based
disinfectants
• Contains no copper or iron stabilizers
• FDA approved (CFR 176.170, 180, and 300)
• USDA approved (G-5, G-7)
• Approved for sale in California
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Description and Use
Spectrus* NX1100 is a proprietary blend of antimicrobial agents, specifically formulated for industrial
water applications. It may be used in open or closed
recirculating cooling water systems. Spectrus
NX1100 is also approved for use in auxiliary water
systems as well as wastewater and waste material
disposal applications. The product label provides a
complete listing of approved end uses.
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NOTE TO CALIFORNIA USERS
At the present time, the State of California has approved this product for use in recirculating cooling
systems (evaporative condensers, heat exchange
water systems, commercial and industrial cooling
towers) and brewery pasteurizers, only. Consult the
California version of the Spectrus NX1100 product
label for a complete listing of approved end-uses
and recommended dosages.
dustrial water systems is essential to prevent biofouling. In cooling systems, biofouling of heat
exchange equipment and tower fill reduces heat
transfer efficiency and can force unscheduled shutdowns and extended turnarounds leading to lost
production. Biofouling can also damage equipment
through microbiologically influenced corrosion
(MIC). As a result of these effects, biofouling must be
prevented in order for operating units to achieve
profitability goals.
The actives in Spectrus NX1100 consist of 5.3% 2bromo-2-nitropropane-1,3-diol (BNPD) and 2.6%
Isothiazolone (1.9% 5-chloro-2-methyl-4 isothiazolin-3-one and 0.68% 2-methyl-4-isothiazolone-3one). Compared to single-active, Isothiazolin-based
products, the combination of actives in Spectrus
NX1100 gives better microbial control at lower dosages (see chart). This blend of actives also limits the
development of resistant microbial populations and
eliminates the need to alternate products to maintain microbiological control.
Spectrus NX1100 is synergistic with chlorine and
bromine disinfection programs. It demonstrates increased efficacy in the presence of these oxidizing
agents. This means that continuous halogenation
does not have to be interrupted or suspended when
Spectrus NX1100 is EPA registered for control of a
wide range of microbial species, including aerobic
bacteria, anaerobic bacteria, algae, yeast, and
fungi. Control of microbiological populations in in-
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* Trademark of General Electric Company; may be registered in one or more countries.
©2010, General Electric Company. All rights reserved.
pfc725en.doc Jul-10
this product is fed into a cooling system. This is especially important when organic contamination
leads to rapid microbial growth.
Spectrus NX1100 is water-based to minimize impact on the environment. It contains no metalbased stabilizers, such as copper or iron, thus simplifying customer compliance with NPDES permits.
The Environmental Fate and Effects (aquatic toxicity
and biodegradation) data package for this product
is listed in Section 12 of the Material Safety Data
Sheet.
Dilution - This blend is best fed neat (undiluted)
from the storage container.
Compatible Materials - Spectrus NX1100 is compatible with most plastics, such as polyvinylchloride
(PVC), high density, cross-linked polyethylene
(HDPE), polypropylene (PP), and Teflon (PTFE). (Teflon
is a registered trademark of DuPont.)
Avoid: mild steel, copper and copper alloys, aluminum, galvanized metals, 304 stainless steel, and
thin-wall 316 SS tubing.
Spectrus NX1100 Environmental
Features
• Non-combustible
• Free of glycols, oils, and organic solvents
• Biodegradable
• Drumless delivery service available
• Copper stabilizer for isothiazolone eliminated
• Reduced BOD and COD
• No SARA 302 warnings
• No Michigan critical materials
• No Proposition 65 materials
• No reportable spill quantity
Treatment And Feeding Requirements
Correct treatment levels and frequency of Spectrus
NX1100 addition depend on many factors. They include, but are not limited to, system cleanliness, nutrient concentrations, temperature, types of
microorganisms, pH, retention time, and other system operating characteristics. Consult the product
label for general dosage guidelines. Microbiological
monitoring is recommended to evaluate product
requirements. Consult your GE representative for
technical advice about your specific application.
This product may be fed using a PaceSetter* Plus or
PaceSetter Model E Control System.
General Properties
Physical properties of Spectrus NX1100 are shown
on the Material Safety Data Sheet, a copy of which
is available on request.
Packaging Information
Spectrus NX1100 is a liquid blend, available in a
wide variety of customized containers and delivery
methods, including the ChemSure* Drumless Delivery Service program. Contact your GE representative for details.
Storage
Protect from freezing. If this product is frozen during
shipment or storage, slight mixing may be required
to insure homogeneity.
Safety Precautions
Use of eye protection (goggles & face shield) and
gauntlet-type gloves is required when handling this
product. See section 7 of the MSDS for additional
information on recommended personal protective
equipment.
In all cases, this product must be applied in accordance with use instructions on the Spectrus NX1100
label.
Feed point - Spectrus NX1100 should be applied to
a point in the cooling system where turbulence and
flow patterns assure good mixing with the water
being treated.
Page 2 Fact Sheet
General Information
EPA Registration Number: 3876-151.
Purchase of Spectrus NX1100 from GE includes a
license to practice the processes covered by U.S.
Patents 4,732,905, 4.855,296 and 4,966,775.
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