// X PREP -3 Effective Batch & Column method pre-treatment for AOX & TOX samples TE Instruments XPREP-3 is a filtration unit into the combustion zone automatically by the designed to prepare samples for both batch NEWTON or by manual introduction. (AOX) and column (TOX) method. After the filtration stage, the samples are introduced in an automated halogen analyzer. The • For the column method, 2 pre-filled columns are connected, using luer-lock fittings for rapid column change or column holder for non independent operating channels, which can be configured to run either batch- or column method: luer-lock columns. After filtration the columns are placed in the T USCAN , or the halogen loaded carbon is cleared from the columns into reusable quartz • For the batch method, a quartz frit is used sample cups, ready for introduction into the to separate the water from the activated combustion zone. carbon after the adsorption stage. Next, the reusable quartz frit is ready for introductio

due to closed filtration system No blockage columns Per channel pressure controllable No pressure loss over columns or frit How Does the Batch Method Work? The AOX batch method is based on the Method Work? adsorption of the organic halogens onto Similar to the batch method, halogens are activated carbon. adsorbed onto activated carbon inside a A mixture of 50 mg activated carbon and 100 pre-packed column. 2 columns are joined mL water sample is shaken for at least one together and connected to the filtration unit. Next, 100 mL sample is poured into the regulations. During this treatment stage,...