Record every AdBlue dispensing, then reconcile the physical stock in the tank with book stock at shift end. Use a fixed cutoff time and a consistent unit, such as litres, so receipts, dispensing records and stock readings cover the same period.
AI-generated illustration; not a photograph of actual Madin equipment or assets.
What belongs in the shift log?
- Date and time, depot and tank identifiers, vehicle identifier and litres dispensed.
- Opening and closing meter readings for each dispensing, when available, the operator and the delivery batch reference.
- For corrections, the reason, approval details and original entry, so the change remains traceable.
Keep the tank’s volume reading distinct from a dispensing meter’s cumulative reading. One describes stock in the tank; the other is a running meter total.
Calculate closing stock and the difference
Book closing stock = opening stock + receipts − dispensed quantity − approved other outflows.
Difference = physical closing stock − book closing stock.
Hypothetical example, entirely in litres: opening stock 1000, receipts 500, dispensed 420 and other outflows 0. Book closing stock is 1000 + 500 − 420 − 0 = 1080. An observed closing stock of 1070 gives a difference of 1070 − 1080 = −10 litres.
The negative difference is a shortage against the records. It does not automatically establish fraud or contamination. The −10 litres is an example, not a normal loss allowance or a universally acceptable threshold.
Check the records before drawing conclusions
Check for missing or duplicate transactions, timing around the cutoff, and reading methods against the device instructions. Before attributing a cause or blaming anyone, resolve these questions. Preserve the original entry and approval trail when correcting records; do not erase history. Quantity reconciliation does not prove chemical quality.
Related tasks are covered in setting an AdBlue reorder point and checking the certificate of analysis when receiving AdBlue.
Frequently asked questions
Does a minus 10-litre difference prove a leak?
No. It calls for investigation, but the difference alone does not identify its cause.
Do we need an ERP system first?
No. A controlled log with a designated owner and a traceable correction process can be used.
Contact Madin to discuss AdBlue supply requirements and how dispensing logs could be handed over between shifts.
