Vendeur: aquaticspecialistlimited (2.478) 99.6%, Lieu où se trouve: Bournemouth, Lieu de livraison: GB, Numéro de l'objet: 322333366069 Water Type: Marine, Brand: Royal Nature, MPN: 7290013698117, Les Détails: Marine Aquarium Calcium Test Kit by Royal Nature Keeping the tests user friendly was a big concern for Royal Nature and so their chemists were able to get the calcium test to two steps only. Having clear color changes in the titration was also key, to help eliminate user confusion on guessing if they are reading the test accurately. Each test uses a two-part chemical reaction and a syringe to add water until the final color is hit. We also guarantee you’ll get 50 tests out of each calcium test. Our way of testing Ca is a bit different and based on direct titration where we add sea water to the chemical solution. Our preferred solution reacts first to Ca and then Mg. at this end it reacts to the colored indicator of the metal ion and that's the stage of changing colors. The indicator color is changing in a very clear step from pink to blue. Our ability to produce in small batches is critical to achieve analytical calibration which is a key to our tests accuracy. Shipping Is normally by Royal Mail Business 48 or 24 postal service. All Royal Mail parcels now have tracking numbers & delivery confirmation. Some items which Royal Mail don't allow or larger item are normally sent by courier, extra charges may apply so please ask for a postage price. Extra charges apply to Northern Ireland, the Scottish Highlands, Isle of Man, and Channel Islands, also postcodes AB 30-38 and AB 44-56, FK17-21, G83, IV1-29 IV 30-32 AND IV33-99, KA27,28 KW 15-99, PA20-99 PH 17-32 AND PH 34-48, PH 33, PH 49-99, TR 21-25 plus all ZE postcodes. We regret these extra charges but couriers pass on additional shipping charges for these location which we in turn have to pass on. Collection from our offices can be made by making an appointment.