Hach HQd 系列便攜式水質分析儀目前可檢測多種參數。Hach HQd便攜式水質分析儀具有絕佳測量靈活性，電極更換等操作簡單，可自動識別電極。
HQD meters feature a simple user interface that does not require manuals or training to operate.

The IntelliCAL PHC281 is a standard combination pH electrode, robust plastic body, refillable with built-in temperature sensor and 1 m cable. PHC281 is intended for laboratory use and specially designed for fast response and stabilisation to measure pH in general purpose water quality applications or in difficult samples such as low ionic strength (LIS), ultrapure, dirty, TRIS, or high-solid content samples.

The IntelliCAL ISEF121 is a digital, combination fluoride ion selective electrode (ISE) with a non-refillable, single junction reference and built-in temperature sensor. The ISEF121 electrode is intended for laboratory use. The ISEF121 is ideal for measuring fluoride concentrations in drinking water, wastewater, and general water quality applications. The ISEF121’s solid-state sensor design eliminates membrane replacement and allows for dry storage of the ISE.

Range : 0 - 14 pH

Range : 0.01 mg/L (5 x 10-7 M) - 19 g/L (1 M) F⁻

HQd系列多參數水質檢測儀包含各種IntelliCALTM 電極，可測量pH、導電度、溶氧（LDO），LBOD，ORP 以及鈉、銨、氨、氟、硝酸鹽、氯等多項水質參數。

關鍵字 : 酸鹼度 probe, 酸鹼度計, 水 氟離子 probe, 氟離子電極, pH計, 水 氟離子 濃度, 水 氟選擇性電極, 酸pH meter, 水 酸鹼值 水質計, 水中氟 測定計