When searching for WATSON pipette tips, you may come across catalog numbers such as:
- 110-705C
- 120P-703CS
- 122-204C
- 120-804CS
At first glance, these product codes may look complicated.
However, they often contain useful clues about the tip series, packaging format, sterility, and other product specifications.
That said, not every WATSON product follows exactly the same coding structure.
For that reason, it is better to use the catalog number as a guide rather than relying on it alone.
A practical way to check a product is:
Catalog Number → Tip Series → Packaging → Sterility → Product Specifications
This article explains how to read WATSON pipette tip catalog numbers and what to confirm before selecting a product.
1. Start With the Tip Series Number
The first part to identify is the tip series.
For example:
110-705C
contains 705, which indicates the tip series.
WATSON uses different series numbers for tips with different volumes, shapes, and features.
Examples include:
- 204: 10 µL Short / Graduated
- 207: 10 µL Long / Graduated
- 705: 200 µL Standard / Graduated
- 703: 200 µL Standard
- 706: 1000 µL Standard / Graduated
- 804: 1000 µL Long / Graduated
- 805: 1200 µL Extra Long / Graduated
This means that if you are looking for a 705 tip, checking whether “705” appears in the catalog number is one of the easiest ways to identify the series.
Pipette Tip Selection Table:
https://pipettetips.com/blogs/%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9/pipette-tips-list-non-sterilized
2. Check the First Part of the Catalog Number for Packaging Format
The same tip series may be available in different packaging formats.
For example, 204 Series products may appear with catalog numbers such as:
| Packaging | Catalog Number Example |
|---|---|
| Bulk | 110-204C |
| PC Rack | 120-204C |
| PP Rack | 120P-204C |
| Refill Plate | 122-204C |
This means the first part of the catalog number can often help identify the packaging format.
For example:
110-703C
and
120P-703C
are both 703 Series tips, but they use different packaging formats.
In other words:
The same tip design can have a different catalog number depending on how it is packaged.
3. Sterile and Non-Sterile Products May Have Different Catalog Numbers
Sterility can also affect the catalog number.
For example, for 703 Series PP Rack tips:
- Non-Sterilized: 120P-703C
- Sterilized: 120P-703CS
The same pattern can also be seen in some other series.
For example, 804 Series may appear as:
- Non-Sterilized: 120P-804C
- Sterilized: 120P-804CS
This means that the ending of the catalog number may provide a clue about sterility.
However, it is important not to assume that the same suffix always has exactly the same meaning across every product.
Product numbering may vary by series and packaging format.
Always confirm the current product specifications on the product page or selection table.
4. Example: How to Read 110-705C
Let’s look at a specific catalog number.
110-705C
This product can be understood as:
- Series: 705
- Type: 200 µL Standard
- Feature: Graduated
- Packaging: Bulk
- Sterility: Non-Sterilized
So when you see 110-705C, the catalog number helps you quickly identify it as a 705 Series bulk tip.
After that, you should still confirm details such as:
- Volume
- Tip length
- Graduations
- Sterility
- Compatible pipettes
The catalog number helps narrow down the product, but it should not replace checking the full specifications.
5. Example: How to Read 120P-703CS
Now let’s look at another example.
120P-703CS
This product can be identified as:
- Series: 703
- Type: 200 µL Standard
- Packaging: PP Rack
- Sterility: Sterilized
The same 703 Series may also appear under different catalog numbers depending on packaging and sterility.
Examples may include:
- 110-703C
- 120-703C
- 120P-703C
- 122-703C
- 120P-703CS
This is why ordering only by saying “703 tip” may not be specific enough.
The packaging format and sterility should also be confirmed.
6. Not Every Series Has the Same Packaging Options
Another important point is that not every tip series is available in every packaging format.
A series may be offered in some of the following formats:
- Bulk
- PC Rack
- PP Rack
- Refill Plate
- ECO Pack
- Stack Rack
but not necessarily all of them.
For example, the available packaging options for 705 Series may differ from those for 703 Series.
The same is true for larger-volume tips such as 706, 804, and 805 Series.
So while catalog number patterns can help identify packaging, always confirm whether the desired format is actually available for that specific tip series.
7. Do Not Rely on the Catalog Number Alone
Catalog numbers are useful for identifying products, but they should not be the only basis for selection.
Before ordering, also confirm:
- Volume
- Tip length
- Standard / Long / Extra Long
- Graduated / Non-Graduated
- Sterile / Non-Sterile
- Filter / Standard
- Packaging format
- Pipette compatibility
For example, even within the same 200 µL class, 705 and 703 Series have different features.
Likewise, within the 1000 µL class:
- 706: Standard
- 804: Long
- 805: Extra Long
This means that volume alone is not enough.
You should also compare the shape and intended use of each tip series.
8. Use the Pipette Tip Selection Table
If you already know the tip series you need, the WATSON Pipette Tip Selection Table can make comparison easier.
The table allows you to review items such as:
- Series
- Type
- Feature
- Bulk
- PC Rack
- PP Rack
- Refill Plate
- ECO Pack
- Stack Rack
This makes it easier to compare packaging options and catalog numbers side by side.
A simple way to use the table is:
Series → Packaging → Catalog Number
Pipette Tip Selection Table:
https://pipettetips.com/blogs/%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9/pipette-tips-list-non-sterilized
Catalog Numbers Are a Shortcut to the Right Product
WATSON pipette tip catalog numbers contain useful information that can help you identify the product series, packaging format, and in some cases sterility.
For example:
110-705C
can help identify a 705 Series bulk tip.
120P-703CS
can help identify a sterilized 703 Series PP Rack tip.
However, it is important not to rely on the code alone.
Before selecting a product, confirm:
- Tip series
- Packaging format
- Sterility
- Product features
- Pipette compatibility
A catalog number is a shortcut to the product — not a substitute for checking the specifications.
WATSON BIO LAB SHOP provides a Pipette Tip Selection Table that allows you to compare tip series, packaging formats, and catalog numbers in one place.
Use it when searching by catalog number or comparing different packaging options within the same tip series.