Paul Industries delivers CIP/SIP systems for biotech & bioprocessing as a single-source supplier and installer. We design, fabricate, install, passivate, and validate CIP/SIP systems – the clean-in-place and steam-in-place circuits that sterilize and clean a process train without disassembly – built to the standards your process and your auditors require.
What biotech & bioprocessing need from cip/sip systems
Bioprocessing adds a layer of complexity beyond traditional pharma: living cell cultures, single-use and stainless hybrid trains, bioreactors, and aseptic fill-finish. Cell and gene therapy suites push classification and segregation even harder. The water, piping, and cleanroom systems supporting biologics have to protect sterility and product integrity at every step.
For this work, that means aseptic processing, single-use/stainless integration, WFI and clean steam for bioreactors, and Grade A/B cleanroom segregation – not as an afterthought, but engineered in from the first drawing.
What we deliver
- Clean-in-place (CIP) skids – single-use or recirculating, with spray-device coverage engineered for full wetted-surface contact
- Steam-in-place (SIP) circuits designed for condensate removal, sterilization hold, and validated F0 delivery
- Integration with your process piping so CIP/SIP loops actually reach every dead-leg and instrument
- Cycle development and documentation to support cleaning and sterilization validation
- Controls and recipe management for repeatable, auditable cycles
One accountable partner
Most biotech projects get split between an equipment supplier and an install contractor – and the validation burden falls in the gap between them. Paul Industries closes that gap by self-performing the whole scope, from supply through documented turnover.
Related: CIP/SIP Systems services · Biotech & Bioprocessing solutions · Request a quote
Frequently asked questions
Why do biotech facilities need CIP/SIP systems?
Biotech processes handle live cells, media, and buffers where residual protein, endotoxin, or bioburden ruins a batch. Automated CIP removes tenacious biological soils and SIP sterilizes bioreactors and lines between runs, giving the repeatable cleaning and sterility that biologics manufacturing demands.
How does CIP/SIP work on bioreactors?
A bioreactor is cleaned in place by spray devices reaching the vessel head, walls, agitator, and internals, then steam-sterilized in place to a validated hold before the next culture. Paul Industries designs the spray coverage and steam paths around each bioreactor’s geometry and internals.
Do single-use bioreactors still need CIP/SIP?
Single-use bags eliminate CIP/SIP on the bag itself, but supporting stainless equipment, media and buffer prep tanks, and transfer lines still require cleaning and sterilization. Many biotech plants run hybrid trains, so Paul Industries engineers CIP/SIP for the stainless portions that remain.
How is endotoxin controlled in biotech CIP/SIP?
Endotoxin is heat-stable, so sterilization alone won’t remove it; effective CIP with hot WFI or purified water rinses and validated cleaning chemistry reduces it below limits. Systems fed with WFI and designed for full drainage keep endotoxin off product-contact surfaces.
What soils are hardest to clean in biotech processing?
Denatured protein, cell debris, lipids, and dried media adhere strongly and resist simple rinsing. CIP cycles use hot caustic to break down proteins and lipids plus acid to remove mineral residues. Paul Industries develops and validates chemistry matched to the specific bioprocess soil.
How are media and buffer prep tanks cleaned in biotech?
Prep tanks see high-solids media and salty buffers that leave films and deposits. CIP circulates heated caustic and acid through spray balls covering the tank interior, then rinses to specification. SIP sterilizes before the next batch. Paul Industries builds these prep-tank skids to ASME BPE.
What standards apply to biotech CIP/SIP systems?
Systems follow ASME BPE hygienic design, ASTM A967/A380 passivation, and cGMP with FDA expectations for biologics. WFI feeding CIP references USP <1231>. Riboflavin coverage testing proves spray reach. Paul Industries validates against each. Call 201-450-8280.
How do you validate CIP/SIP for a biologics process?
Validation confirms residue and bioburden removal and sterility. Riboflavin testing proves coverage, swab and rinse sampling confirm protein and cleaning-agent limits, and SIP thermal mapping confirms the sterilization hold. IQ/OQ/PQ document repeatable performance across the biotech train.
Why is spray coverage critical for bioreactor cleaning?
Cells and media coat every internal surface, so any spot a spray device misses harbors residue that can contaminate the next culture. Coverage is engineered around agitators, baffles, and sensors, then proven with riboflavin. Missed coverage is a leading biotech cleaning failure.
Can CIP/SIP handle multi-product biotech suites?
Yes. Multi-product biotech facilities need cleaning validated to prevent carryover between different cell lines and molecules. CIP cycles and residue limits are set per changeover, and SIP re-sterilizes between campaigns. Paul Industries designs suites for validated product-to-product changeover.
How does CIP/SIP support cell and gene therapy manufacturing?
Cell and gene therapy runs small, high-value batches where a single contamination event is costly. Even with heavy single-use adoption, stainless prep and support equipment needs validated CIP/SIP. Paul Industries scopes systems for the stainless footprint in these suites.
What water quality does biotech CIP/SIP require?
Final rinses typically use WFI or high-purity water to avoid reintroducing endotoxin or ions onto sterilized surfaces. Clean steam for SIP is generated from purified feedwater. Paul Industries integrates CIP/SIP with the high-purity water and clean-steam systems that feed them.
How long does bioreactor SIP take?
SIP time is driven by vessel size, heat-up rate, the validated sterilization hold, and controlled cool-down under sterile gas. Larger stainless bioreactors take longer to reach and hold temperature uniformly. Times are fixed during cycle development and confirmed in validation.
What causes SIP failures on biotech equipment?
Common causes are trapped air pockets preventing steam contact, condensate that won’t drain, cold spots near sensors and nozzles, and unswept dead legs. Paul Industries designs steam paths, air removal, and drainage to eliminate these before validation. Call 201-450-8280.
Can you retrofit CIP/SIP into an existing biotech suite?
Yes. Automated CIP/SIP can be added to existing bioreactors, prep tanks, and transfer lines through retrofit engineering scheduled around campaigns. Paul Industries ties into live biotech trains during planned downtime to limit disruption to culture schedules.
How do I start a biotech CIP/SIP project?
Provide your bioreactor and prep-tank details, process P&IDs, product and cell-line information, and cleaning and sterility targets. Paul Industries engineers coverage and steam paths, fabricates to ASME BPE, installs, and validates. Call 201-450-8280 to begin.
What biotech requirements do you build to?
Our cip/sip systems work for biotech & bioprocessing is built around aseptic processing, single-use/stainless integration, WFI and clean steam for bioreactors, and Grade A/B cleanroom segregation. Every installation ships with the documentation your quality team needs.
Get a single-source quote
Paul Industries designs, fabricates, installs, passivates, and validates – one accountable partner instead of a vendor plus a contractor plus a validation firm. Tell us about your project and we will scope it.
What do biotech CIP and SIP systems have to achieve?
| Requirement | What it means |
|---|---|
| Cleaning objective | Removal of media, buffer and cell debris; protein soils behave differently from small molecules |
| Changeover | Product-to-product changeover is the driving case, not just end-of-campaign |
| Sterilisation | SIP of bioreactors, transfer lines and filter housings before inoculation |
| Sterile boundary | Valve arrangement defining the boundary must be provable and documented |
| Coverage | Vessel geometry with internals (impellers, baffles, probes) makes coverage harder to achieve |
| Biological waste | Inactivation before discharge where the organism requires it |
| Velocity and return | Return line sized to carry supply flow; a flooded circuit cleans nothing |
| Validation | Cleaning validation plus bioburden and endotoxin control between batches |
Do you handle validation, or just installation?
Both. For CIP and SIP in a biotech plant the validation is inseparable from the installation, because whether a vessel cleans depends on spray device placement, circuit routing, return velocity and valve sequencing rather than on the skid. Paul Industries runs the riboflavin coverage testing that qualifies the spray devices, develops the cycle recipes, executes the three validation runs per circuit, and handles swab and rinse sampling against the carryover limit. For SIP we perform the thermocouple mapping that demonstrates air removal and condensate drainage at worst-case locations. A contractor who installs but cannot validate hands you a skid; the deliverable you actually need is a documented cleaning result.
Can you take a project from design through startup?
Yes. On a biotech cleaning system the startup phase is where most of the risk sits, because a cycle can only be developed meaningfully against real soil, which means running it during a gap between campaigns rather than on a convenient date. Holding design through startup under one contract means the circuit routing, return velocity and spray device selection are decided with the cycle in mind rather than handed to whoever validates later. It also means a failed coverage test is corrected by the party that built the circuit, in the same window, instead of becoming a scope discussion between a skid vendor and a piping contractor.