Only a photo or an old model number? How to request the right equipment

You need another item like the one already in use, but the box is gone and the old quotation lists only a short description. Send the information you have, together with what you need the item to do. A photo helps a supplier investigate; it does not establish the exact specification or confirm that a replacement will fit.

Start with three useful photos

Photograph the item and its identifying details clearly enough to read without enlarging a blurred image:

• The whole item, showing its shape and where it is used. For an accessory, include the equipment it belongs to.
• The accessible product label, with the brand, model and any full item code visible. Send the original image and type the code separately if you can read it.
• The existing part or its packaging, if available. Include labels on boxes or bags and visible connection details. Photograph only what you can access without dismantling equipment.

Keep uncertain characters uncertain. If the label could say 0 or O, point that out rather than completing the code from memory.

A model, an item code and a serial number answer different questions

Copy the full model name, including any letters or numbers after the main code. A catalogue number, order code or part number identifies the item or variant being ordered. A serial number identifies an individual unit. A lot number identifies a production batch. Send the label when you are unsure which number is which.

For a spare part, give both the equipment model and the part code if known. The part’s shape alone is insufficient. If you have an old manual, send its cover and the relevant parts page; an old quotation or invoice can also help trace a previous item.

Add the purchase details the photo cannot show

Include these details alongside the images:

• What you need: another complete unit, a replacement part, an accessory or a consumable refill.
• Quantity and pack size: for example, 2 packs of 100 pieces, rather than 2 boxes with an unknown count.
• Use and essential requirements: the task, known dimensions, material or grade, and the equipment the item must work with.
• Delivery location and needed-by date: identify urgent items and whether separate deliveries are acceptable.
• Your contact details and any information still missing, so the supplier knows what to clarify before quoting.

For routine supplies, the consumables buying guide explains pack sizes and grades. For replacement glassware, the glassware buying guide covers the assembly and connection details to include.

Separate an exact repeat from an acceptable alternative

If the same item is essential, write “same brand and full item code only”. If you can consider alternatives, say which features must remain the same and which can change. Permission to compare another brand does not mean permission to change the material, size or intended use.

Ask the supplier to identify any proposed substitute separately and explain the relevant differences. A new model number or matching capacity does not establish compatibility. Review the exact item and supporting product information before accepting an alternative.

Two example requests

These examples illustrate what to include; they are not customer orders.

Repeat a consumables order

Please quote 2 packs of the filter paper shown on the attached box label, 100 sheets per pack. We need the same brand, full item code, grade and diameter for our existing procedure. Please confirm the current pack size and availability. Delivery is to Chiang Mai within three weeks. If that item is unavailable, please tell us before offering an alternative.

Identify a replacement part

We need 1 receiving flask for the filtration assembly in these photos. The equipment label and the separate flask are shown, but the flask’s part code is unreadable. Please check which replacement fits this assembly. We need the flask alone. If only a complete set is available, please quote it separately. Delivery is to Bangkok within one month; please confirm whether that is possible.

Copy this request and fill in what you know

Please help identify and quote the following item.
Item needed: [description]
Brand and model: [as shown on label, or unknown]
Full catalogue or part number: [if known]
Existing equipment it must fit: [brand and model, if applicable]
Quantity and contents per pack: [details]
Use and essential requirements: [details]
Alternatives: [exact item only, or changes we can consider]
Needed-by date and delivery location: [details]
Photos or previous documents: [what is included]
Details that need checking: [details]
Contact name and reply details: [details]

Send what you have, then check the quotation

You can start a quotation request with the details available and send label photos by email or LINE. We check the item and sourcing options, then clarify missing details before quoting. Our ordering guide explains the next steps. Availability depends on the item; a sourcing request is not confirmation that we can supply it.

Before ordering, compare the quoted code, quantity, pack size, included parts and delivery terms with your request. If you have a mixed list, read when buying several brands through one supplier is worth it to decide which items to combine.

References for checking product details

This checklist follows ManaEsse’s request and item-checking process. Check model-specific specifications and compatible parts in the manufacturer’s documents. For Hanna products, consult the Hanna Instruments documentation library (opens in a new tab).