Highly concentrated fluorescein yellow dye in distilled water basewill make 1000ltrs -1200ltrs of UV traceable dye FREE LED UV KEYCHAIN. compatible with all engine coolants, add 1-2 drops per 1ltr of water also for use in drainage leak detection and other water based tasks.a little goes a long way with this product and we guarantee its one of the most concentrated here on ebay! same day postage if ordered before 2pm. Gloves recommended when handling!! includes 1 x 100ml dye + 1 x led uv key chain.
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