SeaSpray Nebulizer 2.0 mL/min, includes UniFit Connector with 0.75 mm ID x 1.6 mm OD x 700 mm long tubing (1 pc.) and EzyLok Connector Kit (1 pc.).Optimum nebulizer gas flow rate is 0.7 L/min and sample flow rate is 2.0 mL/min. Recommended not to exceed optimum 2.0 mL/min sample flow rate; however, lower gas and sample flow rates are OK. The backpressure should read approximately 40 psi at 2.0 L/min gas flow rate. Tolerates up to 20% TDS. We recommend the use of the Elegra Argon Humidifier to achieve best performance with high TDS.Replacement parts include P/Ns NFT-16-75 and 502702994.Recommend nebulizer maintenance tools are Fluka RBS25 (P/N NC9000117) and Eluo Nebulizer Cleaning Tool (P/N NC9462559). When nebulizer is not in use, best to store in the provided hard plastic case.Consider upgrading to our new Direct Connect (DC) SeaSpray to take advantage of the cost-effective design improvements.Glass Expansion is ISO 9001:2015 certified by AB Certification, No. AU4501-9001