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A. The tester uses a disc-float method. Squeeze the bulb of the syphon tube and insert it into the DEF / AdBlue® solution, then slowly release the bulb to draw liquid up to the marked line on the tube. The number of discs that float indicates the urea concentration of the solution.
A. Yes. The Draper 97983 is fitted with a 740 mm extra-long hose, which is specifically designed for tanks with filler necks where a shorter instrument would not reach the fluid.
A. Yes. The tester is designed for use at both hot and cold temperatures, making it suitable for testing AdBlue® / DEF solution under typical workshop or roadside conditions.
A. After each use, wash and flush the tester through with water. This helps prevent urea crystallisation within the tube and syphon mechanism and keeps the instrument accurate for future tests.
A. The tester is designed to measure the urea concentration in DEF (Diesel Exhaust Fluid) / AdBlue® solution.
A. Next-day delivery is available on most products and will appear as an option at checkout where eligible.
A. We accept all major credit and debit cards, along with PayPal.
A. In-stock orders placed before 14:30 Monday to Friday are usually dispatched the same day.
A. We accept returns within 30 days of purchase for items that are unused, undamaged, and in their original packaging. Returns are available only for UK-delivered orders and must include proof of purchase. Before returning an item, please contact us at [email protected] to obtain a Return Merchandise Number (RMN). You may also be asked to share images of the product and its packaging for verification. Items that do not meet these conditions will not be accepted for return. If your return is approved, we will initiate a refund to your credit card or original method of payment. A restocking fee of up to 15% of the order value may apply to each returned item.
A. WhatsApp us on 07754 288583 with photos of the item and packaging, and we'll resolve the issue in line with our returns policy.
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