By Donal O’Sullivan, BSc. Reviewed by Michael Anderson, MBA.

Chromatography consumables standardisation in a CRO or contract testing laboratory means defining which products and specifications can be used repeatedly across appropriate workflows while preserving the technical requirements of each method, instrument and client project. The objective is not to force every chromatography workflow onto the same vial, filter, column or GC consumable. It is to identify where requirements genuinely overlap, create clear approved-product records and establish suitable alternatives before supply problems disrupt active work. For CRO operations teams managing multiple projects and analytical schedules, that can make repeat purchasing more predictable without turning procurement convenience into a technical decision.

Key Takeaways

• Standardise recurring technical requirements, not simply SKUs. Products should be consolidated only where the relevant methods, instruments and workflows genuinely share the same requirement.
• Keep project-specific consumables separate where necessary. A product approved for one method or client project should not automatically be treated as suitable for another.
• Maintain controlled records of primary products and approved alternatives. Operations and purchasing teams should know what can be reordered routinely and when technical review is required.
• Define the workflow to which an approval applies. An approved consumable should be associated with its intended method, instrument, sample type or other relevant operating context.
• Prepare alternatives before supply becomes urgent. A previously assessed alternative can support continuity, but “alternative” should not be assumed to mean technically equivalent.
• Use standardisation to support project continuity and repeat purchasing. Detailed stock levels, reorder triggers and safety-stock calculations are separate stock-control decisions.

Why Is Consumables Standardisation Different in a CRO?

A CRO or contract testing laboratory can have several chromatography workflows running at the same time.

One project may use a particular HPLC vial and syringe-filter specification. Another may require a different filtration material, column configuration or GC consumable. Some products may be shared across several projects, while others exist for a specific method, instrument or client requirement.

That creates a more complex standardisation problem than simply asking, “Which products do we buy most often?”

The operational question is:

Which requirements are genuinely common enough to standardise, and which differences need to remain controlled?

This matters because CRO operations are often shaped by:

• multiple active client projects;
• scheduled analytical batches;
• repeat methods and recurring testing programmes;
• instrument availability;
• changing purchasing responsibility;
• project handovers between scientists or teams;
• time pressure when an approved consumable is unavailable.

A useful standardisation system therefore has to support both consistency and controlled variation.

For a wider overview of the consumable families involved in chromatography workflows, see The Complete Guide to Chromatography Consumables for UK Laboratories.

What Should a CRO Standardise?

A good starting point is to look for chromatography consumables that are purchased repeatedly against a stable technical requirement.

Examples might include:

• chromatography vials, caps and septa;
• recurring syringe-filter specifications;
• GC liners, ferrules and syringes;
• established HPLC or UHPLC column specifications;
• guard-column configurations;
• routine sample-preparation consumables;
• frequently used chromatography accessories.

However, being purchased frequently does not automatically make a product suitable for laboratory-wide standardisation.

A CRO might use the same vial configuration across several workflows because the relevant requirements genuinely match. In another case, two visually similar vials may need to remain separate because different instruments, closures or methods are involved.

The same principle applies to filters, columns and other consumables.

Standardise the shared requirement only where the technical basis for sharing it is clear.

What Should Remain Project-Specific?

Some chromatography consumables should remain separate even when reducing SKU count would be operationally convenient.

A separate product record may be justified where there are differences in:

• instrument compatibility;
• method requirements;
• sample properties;
• material or chemical compatibility;
• dimensions or geometry;
• filtration membrane or pore size;
• chromatography column chemistry or dimensions;
• controlled or validated procedures;
• client-specific requirements.

For example, two projects may both use syringe filtration but require different membrane materials because the solvent or analyte conditions differ.

Likewise, two methods may both use reversed-phase columns without the specific columns being interchangeable.

The goal is therefore not maximum consolidation.

It is controlled consolidation without removing distinctions that protect workflow suitability.

Why Duplicate and Inconsistent Records Develop

CROs can accumulate duplicate or near-duplicate consumable records for several reasons.

Different project teams create separate records

Two teams may be using the same product but describe it differently in local spreadsheets or purchasing systems.

Different suppliers use different commercial references

The same manufactured product may appear under more than one supplier code, making genuine duplication difficult to recognise. However, matching product descriptions or apparent specifications do not establish that products from different suppliers are identical. Where records are consolidated, the laboratory should confirm the underlying manufacturer and product identity, or retain separate records where technical equivalence has not been established.

Historical products remain active

A product may have been replaced operationally but still appear on project or purchasing records.

Urgent purchasing introduces additional products

When the usual product cannot be sourced quickly, a new item may be purchased and then remain in the system even after the immediate problem has passed.

Similar products are mistaken for equivalent products

Two products can share a broad description without having the same controlled specification or approved use.

Before removing duplicate records, CRO operations teams should therefore establish whether the duplication is commercial, administrative or technical.

Build a Controlled CRO Consumables List

A controlled consumables list gives scientists, operations teams and purchasing staff a common reference for recurring chromatography requirements.

The exact format will depend on the organisation, but the record should contain enough information to distinguish routine repeat purchasing from a change requiring technical review.

Control field	What it should establish	Why it matters in a CRO
Consumable category	Vial, filter, column, liner, ferrule or other defined group	Helps organise recurring requirements across projects
Approved product identity	Manufacturer and product or catalogue number where available	Reduces ambiguity when products are reordered
Controlled specification	Relevant technical characteristics required for the workflow	Preserves the basis of suitability
Approved workflow or project use	Methods, instruments, projects or work areas for which the product is accepted	Prevents an approval being applied too broadly
Primary product status	Normal repeat-order item	Gives operations and procurement a clear default
Approved alternative status	Alternative already accepted for specified use	Supports continuity if the primary product cannot be sourced
Supplier reference	Supplier code where useful	Helps distinguish supplier records from technical product identity
Technical owner	Person or function responsible for approving relevant changes	Provides a clear escalation route

The central control is the link between the product and its approved use.

A consumable should not simply appear on a list labelled “approved” without enough context to understand what that approval covers.

For assessed alternatives, the record should also identify the approval date and reference the supporting technical assessment or approval record. Depending on the consumable and workflow, the supporting evidence may include documented compatibility checks, manufacturer information, comparative testing or relevant method-performance verification. The extent of assessment should reflect the risk of the proposed substitution and the laboratory's applicable quality requirements. The controlled list can reference this evidence without duplicating the full technical assessment.

Primary Products and Approved Alternatives

For recurring chromatography workflows, it can be useful to distinguish three statuses:

• Primary approved product — the product normally reordered for the defined workflow.
• Approved alternative — another product whose suitability has already been assessed for specified use.
• Proposed alternative — a product that has not yet completed the laboratory's required review.

This distinction becomes particularly valuable when a CRO is working to client deadlines.

If a primary product becomes unavailable, an existing approved alternative can be considered without repeating technical assessments already completed for the specified workflow. Before substitution, the laboratory should confirm that the approval remains applicable to the current method, instrument, sample conditions and project requirements, and that any required change-control authorisation or performance verification has been completed.

However, the presence of an alternative on a purchasing list should not be treated as proof that it can be substituted in every workflow.

Approval needs to be tied to the relevant method, instrument or application.

How Standardisation Can Support Project Continuity

The operational benefit of standardisation comes from reducing uncertainty before it reaches an active project.

Operational issue	Standardisation control	Technical safeguard
Repeated uncertainty over which product to order	Maintain an approved primary product record	Preserve the relevant specification and approved use
A preferred product becomes unavailable	Maintain assessed alternatives where justified	Confirm that the alternative is approved for the specific workflow
Different teams use different descriptions	Use consistent product identity and specification records	Do not merge technically distinct products solely because descriptions look similar
Staff responsibility changes	Keep consumable requirements in a shared controlled record	Avoid relying on individual memory for technical decisions
Several projects appear to use the same consumable	Review requirements for genuine overlap	Keep separate products where method, instrument or sample requirements differ
Purchasing needs to act quickly	Define which items can be reordered routinely	Escalate changes that could affect technical suitability

The purpose is not to eliminate every operational interruption. No standardisation system can guarantee uninterrupted supply or project completion.

It can, however, make the response to recurring purchasing decisions more structured.

Can Consumables Be Standardised Across Multiple Client Projects?

Yes, where the underlying technical requirements genuinely align.

The most useful question is not:

“Can we use one product for all projects?”

Instead ask:

“Which controlled requirement do these projects share?”

If several workflows require the same product identity and technical specification, a common approved product may be appropriate.

If the apparent similarity disappears once the method, instrument or application is examined, separate records should be retained.

A practical cross-project assessment can follow four questions:

1. Are the relevant technical requirements the same?
2. Is the product approved for each intended workflow?
3. Are any method, instrument or client restrictions different?
4. Would consolidating the record remove information needed to control use?

If any of these questions remain unresolved, consolidation should wait.

Standardisation Is Not the Same as Stock Control

The two activities are closely related but should remain distinct.

Standardisation establishes what the laboratory is prepared to use.

Stock control determines when and how much to reorder.

A CRO may have an excellent approved-product list and still need a separate process for:

• monitoring usage;
• setting minimum quantities;
• deciding reorder triggers;
• planning around lead times;
• responding to unusually high project demand.

Keeping those responsibilities separate prevents this standardisation framework from becoming an uncontrolled inventory-management exercise.

Repeat Ordering Without Weakening Technical Control

Once recurring products are clearly defined, repeat purchasing can become easier.

Operations or purchasing teams can work from a controlled requirement rather than reconstructing the decision each time an order is placed.

That may help reduce:

• vague purchase requests;
• duplicate catalogue records;
• repeated supplier searches;
• uncertainty around previously used products;
• accidental selection of an unapproved substitute.

The key safeguard is that purchasing efficiency follows the technical decision rather than replacing it.

Price, lead time or supplier convenience may influence which approved option is purchased. They do not establish suitability where the product or controlled specification changes.

A Seven-Step CRO Consumables Standardisation Workflow

1. Map recurring chromatography workflows

Identify the methods, instruments and project types that repeatedly consume chromatography products.

Start with recurring work rather than trying to rationalise every one-off research requirement.

2. Identify the consumables used in each workflow

Record the recurring vials, filters, columns, GC consumables and other items associated with those workflows.

At this stage, preserve the existing distinctions rather than assuming they are duplicates.

3. Define the controlled requirement

For each recurring item, identify the technical characteristics that must be preserved for its approved use. Depending on the consumable, these may include vial and closure dimensions, septum materials, filter membrane material and pore size, column stationary-phase chemistry and dimensions, or GC consumable geometry and material compatibility. Where relevant, also consider operating conditions such as solvent exposure, temperature and pressure, together with sample-contact suitability and instrument or manufacturer requirements.

Record only those characteristics that materially affect suitability for the defined workflow, rather than creating unnecessary specification fields.

4. Identify genuine cross-project overlap

Compare workflows to determine where the same approved requirement occurs repeatedly.

Consolidate only where that overlap is genuine.

5. Define primary products and approved alternatives

Record the normal repeat-order item and, where useful, alternatives that have already completed the required technical assessment.

Keep proposed alternatives separate until they have been appropriately reviewed.

6. Assign technical and operational ownership

Make clear who can maintain the purchasing record and who needs to approve changes that could affect the method, instrument or project.

This is especially important where responsibility moves between scientists, project teams and central purchasing.

7. Review when something relevant changes

Review the standard when projects, methods, instruments, product specifications or other relevant requirements change. Relevant triggers may also include manufacturer notifications of product changes or discontinuation, recurring consumable-related performance problems, and evidence that a previously approved product is no longer suitable for its intended use.

Where a change could affect analytical performance, assess its impact before continued use under the existing approval. Routine repeat orders of an unchanged approved item should not require the entire decision to be reopened, provided applicable receiving checks, acceptance requirements and routine performance controls remain satisfied.

Frequently Asked Questions

What does chromatography consumables standardisation mean in a CRO?

Chromatography consumables standardisation in a CRO means defining approved recurring products and specifications for appropriate workflows while retaining project-specific differences where they are technically necessary.

The aim is to make repeat purchasing and project handover more consistent without assuming that one product can be used across every method, instrument or client requirement.

Which chromatography consumables can a CRO standardise across projects?

A CRO can consider standardising chromatography consumables where multiple projects genuinely share the same technical requirement and approved use.

Potential examples include recurring vials, filters, GC consumables or established column configurations. Products should remain separate where method, instrument, sample or client requirements differ.

When should a chromatography consumable remain project-specific?

A consumable should remain project-specific when its suitability depends on requirements that are not shared across the wider laboratory.

These may include instrument compatibility, method conditions, sample characteristics, controlled specifications or client requirements. Reducing the number of SKUs is not sufficient justification for removing a necessary technical distinction.

How should CROs record approved alternatives?

Approved alternatives should be linked to the specific workflow or requirement for which their suitability has been accepted and should be traceable to the relevant approval or technical assessment.

The record should distinguish the normal primary product from the approved alternative, identify where the alternative can be used and reference the supporting approval information. An alternative accepted for one method should not automatically be treated as approved across other projects.

Who should approve a consumable change during an active project?

A consumable change that could affect technical suitability should be assessed by the laboratory function responsible for the relevant method, instrument or controlled workflow.

Before an approved alternative is substituted, the laboratory should confirm that its approval remains applicable to the current project and complete any required change-control authorisation or performance verification. Operations and procurement teams can identify supply issues and alternatives but should not determine analytical equivalence where technical assessment is required.

Can one approved consumable be used across multiple client methods?

One consumable can be standardised across multiple client methods only where its approved technical requirements and intended use genuinely apply to each method.

A product's approval in one workflow does not by itself establish suitability for another. Confirm any method-, instrument- or client-specific restrictions before creating a common standard.

Make Standardisation Part of CRO Operations Control

For a CRO or contract testing laboratory, chromatography consumables standardisation works best when it sits between technical control and repeat purchasing.

The laboratory defines what is suitable. Operations identifies where requirements recur. Procurement can then order against clear approved records instead of rebuilding the decision every time.

That approach supports consistency while preserving the differences that matter between projects.

Once recurring chromatography requirements have been defined, LabFriend UK can help your team request a repeat chromatography consumables quote based on those approved requirements.

Read More

• The Complete Guide to Chromatography Consumables for UK Laboratories

Explore More

• Browse Chromatography Consumables for Repeat Workflows
• Contact LabFriend UK About Repeat Consumables Requirements

 

 

Written by: Donal O’Sullivan, BSc, Co-Founder and Sales Director, LabFriend UK. Donal brings deep chemistry-led technical expertise across analytical chemistry, biochemistry, environmental monitoring, laboratory instrumentation, consumables and scientific product selection.

Reviewed by: Michael Anderson, MBA, Founder and Managing Director, LabFriend UK. Michael reviews LabFriend UK content for customer relevance, commercial accuracy, operational practicality and alignment with LabFriend UK’s laboratory supply model.