Nominal quantity and limits
Translate the declared quantity and applicable rules into documented operating, warning and reject limits.
UK packaged-goods guidance
Checkweigher compliance for UK packaged-goods production
A checkweigher can support quantity control, evidence and corrective action, but the machine does not replace the packer’s legal and quality responsibilities.
01Quantity control
02Documented checks
03Defined corrective action
Short answer
Does a checkweigher make a packing line compliant?
No single machine creates compliance. UK guidance requires suitable quantity-control procedures, suitable checking equipment, records where applicable and action when results show a problem. A checkweigher can inspect every pack and produce evidence, but the packer must define and operate the control system.
Official source
Use current GOV.UK guidance
Requirements vary with the product, pack, declared quantity and operating method. Treat this page as engineering guidance and confirm legal obligations with Trading Standards or a qualified adviser.
Project decisions
What the final scope needs to define
Suitable equipment
Confirm range, resolution and demonstrated dynamic performance are suitable for the product and decision.
Routine verification
Use defined checks and challenge procedures to show weighing, tracking, rejection and alarms work.
Production records
Capture results, changes, corrective action, batch identity and responsible users at the required level.
Fault response
Define action after a failed check, repeated underweight result, reject fault or lost product tracking.
Process review
Use trends and giveaway data to centre filling without weakening the consumer-protection decision.
The three packers' rules
Engineer the line around the quantity-control method
Official UK guidance describes the average system and the three packers' rules. Your quality or legal team should define the operational method; the checkweigher can then support the chosen limits, checking method, records and escalation process.
- Identify recipes and prevent unauthorised limit changes.
- Separate reject limits from process warning limits.
- Confirm how tare variation is controlled.
- Retain batch, result and corrective-action records.
- Challenge the complete reject path—not only the weight value.
Application-led engineering
Build the inspection point around your control procedure.
Share products, limits, production rate, reject requirements and the record format your team has defined.
Discuss your applicationCommon questions
UK weight-control FAQs
Must every package be weighed?
The correct method depends on applicable requirements and the packer’s documented system. Obtain advice for your specific process.
Can a checkweigher store batch evidence?
Yes, subject to scope. Counts, statistics, rejects, alarms, recipes and batch identifiers can be retained or exported.
Is filler feedback compliance control?
No. Feedback centres the process; acceptance and rejection logic protects the defined pack decision. They should remain clearly bounded.
Checkweigher buyer resources
Plan performance, cost and compliance before choosing a machine
Practical answers for engineering, production and quality teams preparing a UK checkweighing project.
01
Price & cost guide
Understand quotation scope, cost drivers and total installed project value.
Plan a budget →02Accuracy guide
Compare dynamic performance claims using the real pack at line speed.
Define performance →03Buying guide
Build a requirement covering handling, rejects, data and acceptance.
Choose a system →04TNE calculator
Look up the official GB band and calculate T1 and T2 planning thresholds.
Calculate TNE →Your application, properly defined
Let’s specify the checkweigher your line needs.
Share pack details, target weights, line speed and any inspection or data requirements.