In square plastic bottles, PE, 500 ml, labeled with an individual batch no. on the bottles, traceable to SRM of NIST
| Code | Description |
| BOE 104000 | pH 4,00 (20°C), 500 ml |
| BOE 107000 | pH 7,00 (20°C), 500 ml |
| BOE 110000 | pH 10,00 (20°C), 500 ml |
| BOE 104004 | pH 4,00 (20°C), 500 ml, red colour coded |
| BOE 107006 | pH 7,00 (20°C), 500 ml, green colour coded |
| BOE 110008 | pH 10,00 (20°C), 500 ml, blue colour coded |
