SGLN-96
Serialized Global Location Number (96-bit)
urn:epc:id:sglnWhat is SGLN-96?
Encodes a GLN (Global Location Number) with an extension to identify a specific sub-location. GLNs identify physical locations - a warehouse, a store, a specific dock door.
Used for: Warehouse zones, retail stores, hospital rooms, dock doors - any physical location that needs a tagged identifier.
Field layout
The first 8 bits are always the header (0x32 = 50 decimal), which identifies this as SGLN-96. The partition field determines how bits are divided between the company prefix and the following reference field - see the partition table below.
Defined in GS1 EPC Tag Data Standard v2.3, Section 7.5 (Global Location Number With or Without Extension), encoding procedure in Section 14.6.3.
| Bits | Field | Description |
|---|---|---|
0–7 | Header | 0x32 (50) - identifies this encoding as SGLN-96 |
8–10 | Filter | Filter 3 = "internal" location (e.g. a shelf or bin). Most others reserved. |
11–13 | Partition | Splits bits between company prefix and location reference. |
14–53 | Company Prefix | GS1 Company Prefix of the location owner. |
54–54 | Location Reference | Location reference within the company. Size varies by partition. |
55–95 | Extension | 41-bit extension component. Identifies a sub-location (e.g. a specific shelf in a warehouse). |
Filter values
The 3-bit filter field does not affect identity - it tells readers what packaging level or category the tag is applied to. The same item with different filter values has the same Pure Identity URI.
Source: GS1 EPC TDS v2.3, Table 10-3.
| Value | Name | Description |
|---|---|---|
0 | All others | Unspecified location |
1 | Reserved | Not yet assigned |
2 | Reserved | Not yet assigned |
3 | Internal | A specific shelf, bin, or zone within a larger location |
4 | Reserved | Not yet assigned |
5 | Reserved | Not yet assigned |
6 | Reserved | Not yet assigned |
7 | Reserved | Not yet assigned |
Partition table
The 3-bit partition value determines how the fixed bit space is divided between the company prefix and the following reference field. GS1 company prefixes vary in length (6–12 digits), so the partition tells the decoder where one field ends and the next begins.
Source: GS1 EPC TDS v2.3, Table 14-10.
| Partition | Prefix bits | Prefix digits | Ref bits | Ref digits |
|---|---|---|---|---|
0 | 40 | 12 | 1 | 0 |
1 | 37 | 11 | 4 | 1 |
2 | 34 | 10 | 7 | 2 |
3 | 30 | 9 | 11 | 3 |
4 | 27 | 8 | 14 | 4 |
5 | 24 | 7 | 17 | 5 |
6 | 20 | 6 | 21 | 6 |
Related schemes
Source
GS1 EPC Tag Data Standard, Release 2.3, Ratified October 2025 - see Section 7.5 (Global Location Number With or Without Extension) and Section 14.6.3 for the encoding procedure. Read the EPC encoding guide for a full worked example of decoding hex to URI.