Pilot Plant Laboratory Procurement Guide

1. Choose the laboratory architecture before choosing models

Three offers can carry the same title and still support different teaching. An isolated bench apparatus is usually best when students must see one principle clearly and complete one calculation. A modular sequence is appropriate when departments want several operations that can be taught independently but arranged as a treatment or separation train. An integrated process trainer is appropriate when the learning outcome includes start-up, shutdown, control loops, faults, utilities, P&IDs and interaction between equipment.

Procurement rule: do not compare prices until all bidders have marked the same experiment, process path, measurement points, utilities, included accessories, documents and exclusions.

2. Map the water-treatment train stage by stage

“Water treatment pilot plant” is not a complete specification. A drinking-water sequence, a wastewater sequence and a membrane-demonstration unit can share pumps and tanks while teaching different science. Start with the raw-water or synthetic-feed assumption, then select the stages students must operate: coagulation/flocculation, settling, filtration, adsorption or ion exchange, membrane separation, and biological treatment. State whether samples must be taken before and after every stage.

For each stage, name the response students will plot or calculate—for example residual turbidity against dose, settling behaviour against time, pressure loss through a media bed, permeate quality and recovery, or a breakthrough response. Then list the instrument or laboratory method used to obtain that result. If an instrument is not built into the apparatus, the quotation should say whether it is included, optional or buyer-supplied.

Water-treatment comparison questions

• Is the offered unit a demonstration rig, a teaching pilot plant or a research-configurable system?
• Can each treatment stage be isolated, bypassed or operated independently where the course requires comparison?
• Which feed tank, dosing arrangement, pumps, valves, sampling ports and collection vessels are included?
• Which media, membranes, resins, reagents and biological seed materials are initial consumables, and which are reusable?
• How are backwash, regeneration, cleaning, drain-down and safe disposal handled?
• Which water-quality measurements are integral, and which require separate instruments?

Use the existing water-treatment experiments guide for procedure-level planning, and the complete water-treatment category for the current model list.

3. Specify distillation and separation equipment by operating question

A distillation-column quotation must answer more than column height and construction. The buyer should state whether students must run batch or continuous rectification, compare reflux ratios, determine composition, produce temperature profiles, apply a material balance, estimate theoretical stages, or compare column internals. These outcomes decide the feed system, reboiler and condenser arrangement, reflux control, sampling points, measurement method and time needed for a laboratory session.

Batch, continuous or multifunction?

Column internals are not decorative alternatives. Sieve trays, bubble-cap trays, valve trays, random packing and structured packing create different contacting and pressure-drop behaviour. If comparison is the outcome, require a common basis: operating mode, feed system, measurements, composition method and data-recording interval. If comparison is not required, specify only the internal needed by the syllabus and avoid paying for unused interchangeability.

The procedure and calculation layer is covered in Scientico’s distillation-column experiment guide. The wider family is in the unit-operations catalogue.

4. Connect process equipment to instrumentation and control outcomes

Process control should not be added to a BOQ as a generic “PLC/SCADA” line. Start with the physical loop. Name the process variable, sensor or transmitter, controller, final control element, manipulated variable and disturbance. State whether students need manual operation, open-loop tests, closed-loop tuning, trend recording, alarms or fault exercises. A screen alone does not prove these functions exist.

Data acquisition and software

If software is required, ask for a screenshot or functional description of the offered interface, logged variables, sampling/export format, computer requirements, licence terms and number of simultaneous student stations. Record whether the unit remains operable if the computer is unavailable. For networked or PLC-based systems, state the protocol, programming access and whether source/project files are supplied only when those items are genuinely required by the course.

Use the process-engineering equipment category to review the current physical-loop and process-plant trainers.

5. Treat utilities, room readiness and safety as part of the equipment

Pilot equipment can meet its catalogue description and still be unusable in the destination laboratory. Before quotation, provide the available electrical supply and frequency, water quality and pressure, drainage, ventilation, compressed air, cooling-water arrangement, steam or vacuum availability, door and access constraints, and the preferred location of service connections. Ask the supplier to return a utility schedule for every offered model.

The process fluid or teaching material also matters. Identify the intended safe material system, acceptable substitute fluids, compatible wetted materials and the cleaning or disposal method. Do not assume that a published classroom experiment authorises a particular chemical for every institution. The institution’s laboratory risk assessment, local rules and supervision arrangements remain controlling.

6. Copy-ready RFQ and acceptance checklist

Attach the syllabus, BOQ or named experiments and retain the buyer’s original line numbers. Ask every bidder to respond in the same columns so “complies” cannot hide a different apparatus or missing dependency.

Acceptance evidence to agree before ordering

Define what will be checked at document review, factory acceptance where applicable, receipt, installation and site acceptance. Typical evidence includes nameplate/model identity, included-scope count, workmanship and visible damage, utility match, leak and rotation checks, sensor response, safe start-up/shutdown, one agreed demonstration run, data or calculation output, manuals, drawings, certificates confirmed in the quotation, and training/handover records.

For a reusable line-by-line format, use the tender compliance matrix and review Scientico’s FAT/SAT acceptance guide.