Solid Products

Solid Biocide Solutions

Longer-term performance, simplified handling, and consistent treatment delivery.

Our Solids Line products are engineered for asset owners who need predictable, sustained chemical release without frequent dosing, batching, or fluid-phase storage challenges. These products make treatment easier, safer, and more efficient — especially in locations where logistics, worker access, or dosing control are constraints.

Why Choose a Solid Chemical Product?

✔️ Simplified handling and safer storage
✔️ Reduced chemical handling exposure
✔️ Less reliance on pumps/injection systems
✔️ Ideal for remote or hard-to-access assets
✔️ Maintains treatment between program adjustments

Drop & Go Chemical Treatments

Drop-and-Go products use the same active chemistry as the large-volume solids, but are supplied in pre-measured quantities eminimating the need for manual measuring.

Drop-and-Go is designed for those who:

Need a simplified application process
Ideal for low-volume water systems
Do not have time or resources to measure biocides
Have limited manpower or equipment
Want consistent, repeatable dosing

Solid Biocide Product Line

Note: Most solid products are available in different delivery formats. Some formats require clients to measure and dose, while Drop-and-Go stick formats are pre-measured for simplified application.

Choosing the Right Solid Format

If you need…	Best Fit
Flexible dosage control	Large-volume solids
Simplified handling	Drop-and-Go
No measuring or weighing	Drop-and-Go
Bulk treatment flexibility	Large-volume solids
Consistent, repeatable dosing	Drop-and-Go

Bronopol-Based Solids (2k7 Series)

Active
Bronopol
(2-bromo-2-nitro-1,3-propanediol)

OSP Products
2K7 WSP
2K7 Granular
2K7 Bugsticks
2K7 Slimsticks

Primary Applications

Oil & Gas
• Hydraulic fracturing, drilling, completion & workover fluids
• Produced water treatment
• Pipeline maintenance

Industrial Water
• Cooling towers & recirculating systems
• Utility & light industrial water
• Paper mill process water

Fuels
• Diesel & fuel oil storage tanks
• Systems with intermittent water contamination

Why Choose It
• Broad-spectrum, non-selective biocide
• Low operator exposure & reduced spill risk for drop and go options
• Easy handling with strong compatibility across other system chemistries
• Balanced kill speed and protection longevity
• Stick formats ideal for small-volume batch applications

DBNPA-Based Solids (DB7 Series)

Active
DBNPA
(2,2-Dibromo-3-nitrilopropionamide)

OSP Products
DB7 WSP
DB7 Granular

Primary Applications

Oil & Gas
• Hydraulic fracturing & drilling fluids
• Water flood systems
• Produced water & disposal wells
• Pipelines, storage tanks & surface facilities

Industrial Water
• Cooling towers
• Process water systems

Why Choose It
• Rapid microbial kill
• Broad-spectrum, non-selective chemistry
• Low operator exposure & reduced spill risk for drop and go options
• Excellent compatibility across other system chemistries
• WSP format ideal for small-volume batch treatment

• Balanced performance and protection

Case Studies — Solid Biocides in Real-World Applications

OSP solid biocide products are used across oil & gas, fuels, and industrial water systems where simplicity, consistency, and reliability matter. The following case studies highlight how solid delivery formats — including pre-measured Drop-and-Go options — support effective microbial control under real operating conditions.

Reducing Microbial Load in Coiled Tubing Fluid — Eagle Ford

In the Eagle Ford, a coiled tubing (CT) service provider faced premature CT failures linked to microbial-influenced corrosion caused by high bacterial loads in recycled produced water. Using the ATP Test Kit, the operator first quantified microbial contamination and then applied 2K7 Water Soluble Paks (solid biocide) to reduce total bacterial counts. After treatment, ATP results showed a dramatic reduction in microbial activity, helping mitigate corrosion risk and improve fluid quality. Ongoing monitoring and maintenance dosing were recommended to maintain control levels.

Download the Case Study

Addressing Premature Coiled Tubing Failures — Montney Formation

In northeastern British Columbia’s Montney formation, a series of coiled tubing string failures were traced to microbial-influenced corrosion (MIC) driven by elevated bacterial concentrations in source water. Laboratory testing compared multiple biocides, and 2K7 solids demonstrated longer-lasting microbial suppression compared with alternative chemistries. Field tests confirmed that treatment with 2K7 biocide significantly reduced bacterial levels, and its use was incorporated into the operator’s standard fluid treatment program. Continued application prevented further MIC-related CT failures.

Download the Case Study

Not Sure Which Solids Product Is Right For You?

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Local Solid Manufacturing & Custom Formulation Capabilities

OSP manufactures a line of registered solid and liquid biocide. Our solid products are manufactured in Calgary, Alberta, allowing for direct oversight of quality control, formulation, and production standards. Liquid formulations can be blended in basin to economize transport costs. We offer customization capabilities, custom packaging formats, and application-specific formulation support. This client centered approach allows us to align product performance with your user needs, rather than you to adapt to a one-size-fits-all product. To explore a custom solution, please contact our sales team to discuss customization options.

Frequently Asked Questions

General Product Information:

What types of solid biocides does OSP offer?

OSP provides a range of industrial biocides in solid form including our Bronopol based chemistries which come formulated as Bugsticks (118 g/0.26 lb), SlimSticks (39 g /0.09 lb), granular (5-gal/19-L pail) and water-soluble packs (1 kg/2.2 lb). The solid DBNPA based chemistry is packaged into 1 lb/0.45 kg water-soluble packs and granular (5-gal/19-L pail) delivery forms. Our solids portfolio is designed for various applications including oil & gas, industrial water treatment, and fuel applications.

Are OSP solid biocides registered and compliant?

Yes. All OSP biocides are EPA and PMRA registered.

Can OSP help select the right solid biocide for my system?

Absolutely. Biocide selection depends on water chemistry, temperature, system design, microbial load, and operational goals. Our technical team routinely supports customers with biocide product selection and treatment design.

Product Specific Questions

When should I choose 2K7 Bugsticks/Slimsticks over other biocides?

2K7 Bugsticks/Slimsticks are ideal when balanced efficacy is required, offering good speed and length of protection, especially in batch applications, with direct addition into frac, saddle, hydration, buffer and settling tanks and storage tanks for fuels.

What are Drop & Go products?

Drop & Go products are solid biocide products that are packaged in cylindrical (118 g/0.26 lb), "Bugstick" form or in 1 kg/ 2.2 lb water soluble packs (WSP’s) and SlimSticks (39g/0.09 lb) designed to be placed directly into tanks, sumps, or vessels, where they slowly dissolve and release biocide over time. Compared to liquid biocides, Drop & Go products are safer, offer improved handling and ease of use, no pumps, measuring, or mixing required. The sealed solid formats help minimize operator exposure, eliminate strong chemical odours, and reduce the risk of spills and splashing. In addition, the Drop & Go products generate little to no dust during handling and are simpler to transport and store, making them a safer and more convenient option for routine microbial control in lower volume water systems.

What are Water Soluble Packs (WSPs)?

WSPs are a pre-measured volume of granular biocide, either Bronopol or DBNPA, enclosed in a water-soluble package. The entire pack dissolves in water, reducing handling risk and ensuring accurate dosing.

How do solids compare to liquids?

Liquids are designed for continuous, larger water volume applications, allowing for precise metering and rapid dispersion. The sealed solid formats help minimize operator exposure, eliminate strong chemical odours, and reduce the risk of spills and splashing, with improved safety and ease of handling for smaller water volume batch applications. The best option depends on system design and operational needs.

Treatment & Application Questions

How do I know how much solid biocide to use?

Treatment rates depend on system water volume, total microbial load, and reservoir/process conditions. OSP provides recommended dosing guidelines for all our products and can assist with system-specific treatment calculations.

Can solid biocides be overdosed?

Proper biocide selection and dosing ensure effective control while minimizing unnecessary exposure. Please refer to product bulletins for typical dosage rates or reach out to our technical team to advise on biocide selection and optimal treatment rates for your application.

Use cases and choosing the right product

Can solid biocide products be combined in a program?

Yes, they can be combined, and alternating or combining biocides has been applied to improve performance, reduce overall bacterial load, and address dynamic system conditions. Though many of our biocide products offer broad-spectrum compatibility, lab testing should be completed to verify compatibility prior to combining biocide products and other chemistries in a treatment program.

Performance, Maintenance and Ongoing Use

How quickly do solid biocides work?

Our solid products provide significant microbial reduction within minutes to hours. Every system and microbial community is unique, with various limiting factors that can affect biocide performance. High levels of organic matter, oils, or suspended solids can consume or deactivate the biocide, while established biofilms may physically shield microorganisms and reduce contact with the active biocide chemistry. Their performance also depends on adequate contact time and good mixing, which can be challenging in high-flow or poorly circulated systems. Water chemistry, such as pH, temperature, salinity, and the presence of reactive or scavenging species, can affect biocide stability and longevity.

How often should I treat my system with solid biocide?

Treatment frequency depends on system risk, operating conditions, and monitoring microbial data. Programs may include continuous, batch, or periodic shock treatments, that vary based on the application. Microbial testing, including a biocide efficacy study, can be utilized to determine what biocide and optimal loading to achieve suitable microbial control.

Do I need to rotate solid biocides?

Unlike antibiotics, biocides do not have highly specific targets within bacterial cells, which prevents the risk of antimicrobial resistance. Routinely rotating biocides to prevent resistance is not necessary on most occasions. When a biocide appears to lose effectiveness, it is typically due to changes in system conditions, such as increased contamination, altered operating conditions, new nutrient sources, or under-treating, rather than microbial resistance. Further microbial testing such as qPCR or DNA 16S sequencing may be required to determine microbial functional groups and specific genus, to determine the optimal biocide(s) for the application.

Can OSP help with monitoring and optimization?

Yes. OSP supports clients with microbial monitoring strategies, diagnostic testing, treatment optimization via biocide selection studies, and long-term program development.

Have a water or microbial problem?

Our team can help you understand what’s happening, what’s causing it, and how to fix it — effectively and sustainably.

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