Introduction
You have identified the type of filling machine you need, whether it is a vial filler, ampoule filler, syrup filler, powder filler or tube filler. Now the quotations arrive. Each supplier presents a specification sheet full of numbers and features: speed, accuracy, number of heads, materials, controls, options. They look similar at first glance, but the details can make a big difference to how the machine performs in your plant.
This guide focuses on that stage of the buying process: reading and comparing specifications and quotations. We go through each important feature, explain what it really means, what questions to ask and what to watch out for. If you are still deciding which type of machine you need, start with our guides on how to choose the right filling machine for your pharmaceutical production line and choosing the right filling machine for every stage of pharma production.
1. Output (Speed) Ratings
What the specification says
Speed is usually stated as containers per minute or per hour, often as a maximum or a range.
What to check
- Under what conditions? Speed depends on fill volume, product viscosity, container size and number of heads. A rating for a small fill of a thin liquid may not apply to your product.
- Rated vs realistic speed – actual output is lower once changeovers, cleaning and minor stops are included.
- Whole-line speed – the filler’s speed is only useful if washers, cappers, sealers and labellers keep up.
Questions to ask
- What speed can be achieved with our product, fill volume and container?
- Is the rating for continuous operation or a short test run?
- What limits the speed: dosing, container handling or closing?
2. Fill Accuracy
What the specification says
Accuracy is often stated as a percentage or a range around the target.
What to check
- On what product and volume? Accuracy usually differs between small and large fills, and between thin and viscous products.
- How is it measured? Ask whether it refers to individual containers, averages or standard deviation, and over how many samples.
- Every head – multi-head machines should be accurate on every head, not only on average.
Questions to ask
- Can you demonstrate accuracy with our product during a trial or factory acceptance test?
- How are individual heads adjusted?
- How does accuracy behave over a long run?
3. Dosing System
What to check
- Type – piston, servo piston, peristaltic, gear pump, auger, vacuum wheel, time-pressure or weight
- Suitability for your product – viscosity, suspensions, foaming, shear and oxygen sensitivity
- Cleaning – which parts contact the product, and how are they cleaned or sterilised?
- Adjustment – mechanical or digital setting of volume
For injectables, our article on peristaltic vs piston pumps explains the main trade-offs.
Watch out for
A dosing system that suits a supplier’s demonstration product but not your formulation. Always test with your own product or a representative placebo.
4. Nozzles and Needles
What to check
- Size range suitable for your containers
- Diving or fixed – diving nozzles reduce foaming and splashing
- Cut-off method – suck-back, shut-off valve or other
- Nitrogen purging – if required for your product
Read vial filling machine nozzle selection: how diving nozzles improve injectable filling performance for more detail.
5. Container Handling and Format Range
What to check
- Container sizes covered by the quoted change parts
- Cost and lead time for additional change parts
- Handling method – star wheels, gates, pucks, nests or trays
- Suitability for glass or plastic, and for unstable containers
Questions to ask
- Which of our containers are included in the quotation?
- How many parts change between sizes, and are they tool-less?
- Can the machine handle future container sizes we may introduce?
6. Materials and Surface Finish
What to check
- Product contact materials – usually stainless steel of a suitable grade, plus approved seals and tubing
- Material certificates – available for all product contact parts
- Surface finish of contact parts
- Non-contact parts – frame and covers should be cleanable and corrosion-resistant
Watch out for
Vague phrases such as “food grade” or “pharma grade” without certificates. Ask for specific material grades and documentation.
7. Controls and Software
What to check
- PLC and HMI – brand, screen size, language options
- Recipe management – number of recipes and what they store
- User access levels – operator, supervisor, engineer
- Data recording – batch data, alarms, audit trails where required
- Connectivity – ability to connect to plant systems now or later
Questions to ask
- How does the control system support our data integrity requirements?
- Can recipes be changed without engineering access?
- What happens to data during a power failure?
8. Safeguards and Interlocks
Look for:
- No container, no fill
- Low product level alarm
- Guard door interlocks with safe stopping
- Emergency stops at accessible positions
- Pressure or vacuum monitoring where utilities are critical
- Reject systems for faulty containers where applicable
9. Changeover and Cleaning
What to check
- Changeover time – ask for a realistic estimate and, ideally, a demonstration
- Tool-less parts and colour coding
- Access to product contact parts
- Cleaning procedure – recommended methods and time required
On multi-product lines, changeover performance can matter more than maximum speed. Our article on vial filling line checklist: 7 things to evaluate before buying covers this from the vial perspective.
10. Documentation and Qualification
What to check
- Drawings and manuals – layout, electrical, pneumatic, operation and maintenance
- Material certificates
- Factory acceptance test (FAT) and site acceptance test (SAT) protocols
- IQ/OQ documentation or support
- Spare parts list with recommended spares
Watch out for
Quotations that list “documentation” without specifying what is included. Ask for a list.
11. Utilities
What to check
- Electrical supply – voltage, phase and power
- Compressed air – pressure, flow and quality
- Vacuum, nitrogen, gas or oxygen – where required
- Water or steam – for washing or cleaning systems
- Environmental conditions – room temperature, humidity, classification
Confirm that your facility can supply these before ordering.
12. Footprint and Layout
- Machine dimensions and required clearances
- Access for operation, cleaning and maintenance
- Integration with upstream and downstream equipment
- Barrier compatibility – space for RABS or isolators if planned
13. Support and Service
- Installation and commissioning – who does what, and is it included?
- Training – for operators and maintenance staff
- Spare parts – availability and lead times
- Service response – remote and on-site support
- Warranty – scope and duration
Comparing Quotations Side by Side
Create a comparison table that puts every quotation on the same basis:
| Item | Supplier A | Supplier B | Supplier C |
|---|---|---|---|
| Speed with our product | |||
| Accuracy with our product | |||
| Dosing system | |||
| Containers included | |||
| Extra change parts cost | |||
| Contact materials and certificates | |||
| Control features | |||
| Safeguards | |||
| Changeover time | |||
| Documentation included | |||
| Installation and training | |||
| Warranty and support | |||
| Total price |
Fill in every row. Gaps often reveal items that are excluded or charged separately.
Thinking Beyond Purchase Price
The cheapest quotation is not always the best value. Consider:
- Product loss from overfill, start-up and rejects
- Changeover time multiplied by the number of changeovers per year
- Maintenance and spare parts costs
- Downtime risk and service response
- Upgrade options for future needs
For sterile lines, our article on aseptic vial filling line cost: key cost drivers explained shows where costs really come from.
Red Flags in Quotations
Watch out for these warning signs when reviewing proposals:
- Speed and accuracy claims with no stated conditions – numbers without product, volume or container details are hard to compare.
- “Optional” items that are essential – for example, change parts for your containers, nitrogen systems or documentation listed as extras.
- Vague material descriptions – no grades or certificates for product contact parts.
- No mention of FAT or trials – reluctance to demonstrate the machine with your product.
- Unclear scope of installation and training – who travels, for how long and at whose cost.
- Limited spare parts information – no recommended spares list or lead times.
- Very short warranty or unclear service terms.
None of these automatically rules out a supplier, but each should be clarified in writing before you order.
Turning Requirements into a Clear Specification
The best way to receive comparable quotations is to send suppliers a clear user requirement specification (URS). It should describe your products, containers, fill volumes and tolerances, required output, process needs such as nitrogen or temperature control, materials, controls and data requirements, utilities available, documentation expected and how the machine will be tested. When every supplier responds to the same URS, gaps and differences become much easier to see, and the URS later becomes the reference for your factory and site acceptance tests and qualification.
Machines to Compare
When evaluating options, you can compare specifications across our range, for example:
- Liquid injectables – the Automatic Servo Based Vial Filling Machine, the liquid vial filling machine with rubber stoppering, the automatic liquid vial filling line and the vial cap sealing machine; browse all vial filling machines
- Ampoules – the eight head ampoule filling and sealing machine
- Pre-filled syringes – the pre-filled syringe filling and stoppering machine
- Liquids and viscous products – the Automatic Servo Based Liquid Filling Machine, the servo based piston filling machine and the servo based gear pump filling machine
- Powders – the auger type powder filling machine
- Creams and ointments – the automatic single head tube filling machine (HTF-40A)
Using the FAT to Verify the Specification
The factory acceptance test is where the specification is proven. Prepare a FAT protocol in advance that checks each key item: speed and accuracy with your product, operation of every safeguard, changeover time, recipe functions, data recording and the completeness of documentation. Record the results, agree any corrections with the supplier before dispatch, and use the same criteria again at the site acceptance test after installation.
Specification Checklist
- Speed confirmed for our product and container
- Accuracy demonstrated with our product
- Dosing system suits our product and cleaning strategy
- Nozzles, cut-off and nitrogen options confirmed
- Container range and change parts listed and priced
- Contact materials and certificates specified
- Control features meet data integrity needs
- Safeguards and interlocks included
- Changeover time estimated or demonstrated
- Documentation package listed
- Utilities confirmed
- Footprint and layout checked
- Installation, training, spares and warranty defined
- Total cost of ownership compared
Frequently Asked Questions
What are the most important specifications of a pharmaceutical filling machine? Speed and accuracy with your product, the dosing system, container range, contact materials, controls, safeguards, changeover, documentation and support.
Why do speed ratings differ from actual output? Ratings are often based on ideal conditions. Product properties, fill volume, changeovers, cleaning and line balance all reduce real output.
How should I compare quotations? Put all quotations into the same comparison table, check what is included and excluded, and compare total cost of ownership.
Should I insist on trials before ordering? Yes. Trials with your product and containers are the best way to verify accuracy, speed and handling.
What documentation should a supplier provide? Drawings, manuals, material certificates, FAT and SAT protocols, IQ/OQ support and a spare parts list.
Comparing filling machine options? Contact our team or send an inquiry with your product details and requirements, and we will provide a clear, complete specification.