Good product starts with the facility.
Before a sample reaches the laboratory, its quality has already been shaped by the air, water, steam, gases, equipment, surfaces and people surrounding it. PlumGXP helps you qualify, monitor and understand those systems—so facility data becomes a tool for prevention, not simply a compliance record.
Your facility tells a story.
A pressure shift, recurring water isolate, wet steam event or compressed-air excursion rarely exists alone. Meaning comes from location, process, timing, organism identity, maintenance activity, personnel flow and historical trends.
PlumGXP brings those signals together. We help establish risk-based sampling plans, generate defensible data and recognize patterns that can affect product before they become deviations, rejected batches or inspection findings.
Cleanrooms & controlled areas
Qualification establishes what the room can do. Routine monitoring shows whether it continues to perform during the people, processes and interventions that matter. We use qualification data and process knowledge to help turn locations into a purposeful monitoring plan.
- Environmental monitoring performance qualification (EMPQ)
- Routine viable and nonviable environmental monitoring
- Air, surface, settle-plate and personnel sampling
- Incubation, enumeration, microbial identification and reporting
- Risk-based site selection, trending and investigation support
The utilities you cannot see can still reach the product.
Clean steam and process gases may contact product, product-contact surfaces, closures or critical zones. Their qualification should reflect actual use, the point of use and the contamination control strategy—not merely the quality at the source.
Clean and pure steam testing
PlumGXP can support steam-quality and condensate programs with point-of-use sampling, condensate testing and coordinated qualification studies. Programs may include non-condensable gases, dryness fraction, superheat, conductivity, TOC, microbial quality and bacterial endotoxins, selected according to steam grade and intended use.
We also help assess sampling locations, worst-case points, seasonal or maintenance-related risk and the connection between steam performance and sterilization outcomes.
Compressed air and process gases
Air, nitrogen, carbon dioxide and other gases should be evaluated where they contact product or critical surfaces. PlumGXP provides onsite or supported sampling for viable microorganisms, nonviable particles, moisture/dew point and oil; additional attributes can be coordinated based on the gas and process.
Testing plans consider compressor and dryer configuration, filters, distribution length, point-of-use connections, pressure changes, maintenance and high-risk or distal locations. ISO 8573 classifications may inform compressed-air studies, but acceptance criteria should remain tied to intended use and product risk.
Biological indicators used in steam-sterilization studies
PlumGXP analyzes the biological indicators used in qualification, engineering and troubleshooting studies; we do not perform the autoclave qualification study itself. Clients or their qualification provider expose and document the indicators. PlumGXP receives the exposed and control indicators and provides the microbiological evidence needed to interpret the challenge.
Qualitative growth/no-growth testing: This is the lower-cost go/no-go approach. Any surviving test organism produces a positive result and the indicator fails. Because even one survivor can make the result positive, this method cannot tell you how many logs were reduced.
Surviving-population enumeration and log reduction: PlumGXP enumerates the organisms that remain after exposure and uses the recovered count with the verified starting population to calculate log reduction. This is especially helpful for partial-exposure engineering studies, cycle development, investigation and troubleshooting.
Starting-population verification: We can enumerate unexposed indicators to verify the labeled population and support confirmation of the manufacturer’s certificate of analysis before or alongside a study.
Cleanroom recovery studies
A recovery study establishes how long a cleanroom takes to return from a challenged airborne-particle concentration to its specified at-rest condition. The result helps define scientifically justified recovery or clean-up periods after cleaning, setup, an intervention or another particle-generating activity.
PlumGXP can support recovery testing with qualified particle-counting equipment, onsite execution, data analysis and reporting. Recovery should be established for the room and operating state—not assumed from calculated air changes alone—because air-distribution effectiveness also affects performance.
Disinfectant efficacy studies — USP <1072>
PlumGXP conducts facility-relevant disinfectant efficacy studies using representative cleanroom surfaces, the agents and application conditions used onsite, appropriate contact times, and a challenge panel that can include standard organisms, bacterial spores and environmental isolates.
Study design can evaluate cleaner/disinfectant preparation, use dilution and hold time, organic soil load, neutralization, application method and material compatibility. The objective is not simply to show that a product works in general, but that the facility’s actual disinfection program produces a meaningful microbial reduction on the surfaces it must control.
A result is only the beginning of the question.
Recent FDA enforcement continues to show that isolated passing product results do not replace a capable facility and utility control program.
How connected is your program?
Select the statements your current program can demonstrate. This is a planning prompt—not a formal gap assessment—and can help focus a conversation with PlumGXP.
Programs built around intended use and risk.
The exact standards and acceptance criteria depend on product, process, facility classification, market and utility use. Common foundations include:
References are applied as relevant to the client’s regulated operation. PlumGXP works with each Quality Unit to define the applicable method, sample plan and acceptance criteria.
From a single utility study to a connected facility-monitoring program.
Onsite sampling, qualified equipment and media, laboratory analysis, microbial identification, reporting, trending and investigation support—customized for your team.