Delivery to USA - 3 working days. Introducing the Oktis 2 Portable Fuel Tester – the ultimate tool for testing fuel quality on-the-go! Instruction in English is attached! Designed with convenience and accuracy in mind, the Oktis 2 is a handheld device that quickly and easily analyzes the quality of fuel samples, ensuring that they meet the necessary standards for safe use in engines and other machinery. With its advanced sensor technology and intuitive interface, the Oktis 2 can detect impurities, water content, and other harmful contaminants that could potentially cause damage to engines or compromise their performance. The results are displayed on a clear and easy-to-read LCD screen, providing users with accurate and reliable information in just seconds. The Oktis 2 is also incredibly portable and easy to use, making it the perfect tool for pilots, boaters, mechanics, and anyone else who needs to test fuel quality in the field. Its compact size and durable construction make it resistant to damage from water and other environmental factors, ensuring that it can withstand the rigors of even the toughest work conditions. Specifications: The range of determined octane numbers is from 75 to 99.9. The minimum volume of gasoline required to determine the octane number in flow mode is from 2 to 5 liters. The minimum volume of gasoline required for octane determination in immersion mode is 80 ml. The preparation time of the device for operation is no more than 15 seconds. Power source - 2 AA batteries. The current consumed from the batteries is no more than 80 mA. The temperature of the tested gasoline is from 0 to +40 ?. Ambient temperature - from -10 to +40 ?. Humidity at 30 ? - from 30 to 80%. Product weight - no more than 0.36 kg. Dimensions and weight of the package - 33 x 16 x 5 cm, 0.6 kg. Whether you're checking the fuel quality of your boat, plane, or other machinery, the Oktis 2 Portable Fuel Tester is an essential tool that you won't want to be without. So why wait? Order yours today and experience the peace of mind that comes with knowing your fuel is of the highest quality possible!