GE P&W Spectrus Microbiological Control - Manual

Fact Sheet
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pfc725en.doc Jul-10
Spectrus* NX1100
Microbiological Control Agent
• 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 1
Description and Use
Spectrus* NX1100 is a proprietary blend of antim-
icrobial 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.
1 NOTE TO CALIFORNIA USERS
At the present time, the State of California has ap-
proved 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.
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-
dustrial water systems is essential to prevent bio-
fouling. In cooling systems, biofouling of heat
exchange equipment and tower fill reduces heat
transfer efficiency and can force unscheduled shut-
downs 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% 2-
bromo-2-nitropropane-1,3-diol (BNPD) and 2.6%
Isothiazolone (1.9% 5-chloro-2-methyl-4 isothia-
zolin-3-one and 0.68% 2-methyl-4-isothiazolone-3-
one). Compared to single-active, Isothiazolin-based
products, the combination of actives in Spectrus
NX1100 gives better microbial control at lower dos-
ages (see chart). This blend of actives also limits the
development of resistant microbial populations and
eliminates the need to alternate products to main-
tain microbiological control.
Spectrus NX1100 is synergistic with chlorine and
bromine disinfection programs. It demonstrates in-
creased efficacy in the presence of these oxidizing
agents. This means that continuous halogenation
does not have to be interrupted or suspended when