Problem to be solved: to provide an acid treatment vessel of a laver net capable of easily judging and setting the acid treatment liquid concentration in the acid treatment tank, and correcting the deviation of the detected value occurring during the work by a simple operation.At leastAcid treatment vessel containing acid treatment solution andAn acid treatment apparatus for treating a seaweed net in a aquaculture field into the acid treatment vessel and treating it with an acid treatment liquid for a predetermined timeAn acid raw liquid supply apparatus for supplying raw liquid of acid treatment liquid in the acid treatment tank andThe pH value of the acid treatment liquid in the acid treatment vessel is detected and / or displayed, and the acid raw liquid supply device is operated based on the detected valueIn an acid treatment vessel of a seaweed network equipped with a control device for controlling an acid treatment solution to a constant pH valueThe controller comprisesIt has the function of displaying and controlling the concentration of the acid treatment tank based on the pH value - concentration calibration data of the acid treatment solution.AndA shift means for detecting a pH value of a known concentration acid treatment solution and matching the pH value of a known concentration acid treatment solution based on the calibration curve data by a simple operation is provided.Diagram【課題】作業者が酸処理槽の酸処理液濃度を容易に判断・設定することができ、作業中に生じる検出値のズレを簡単な操作で補正することができる海苔網の酸処理船を提供する。【解決手段】少なくとも、酸処理液を収容する酸処理槽と、養殖漁場の海苔網を該酸処理槽内に誘導し酸処理液で所定時間処理する酸処理装置と、該酸処理槽内に酸処理液の原液を供給する酸原液供給装置と、酸処理槽内の酸処理液のｐＨ値を検出及び／又は表示しその検出値に基づいて該酸原液供給装置を作動させて、酸処理液を一定のｐＨ値に制御する制御装置とを備えた海苔網の酸処理船において、前記制御装置には、酸処理液のｐＨ値－濃度検量線データに基づき酸処理槽の濃度を表示且つ設定制御する機能を有し、更に、既知濃度酸処理液のｐＨ値を検出させ前記検量線データに基づく既知濃度酸処理液のｐＨ値へ簡単な操作で一致させるシフト手段を設けることを特徴とする。【選択図】図２
