Determining the variation and distribution of aqueous chemical species within natural water (oceans, lakes and rivers) is fundamental for us to prevent pollution, and to maintain a healthy and sustainable environment. Similarly, monitoring of vital chemicals from industrial fluids could help improve the yield and reduce the waste. Traditionally most of the chemical parameters are measured by manual sampling and analysis back in labs, which is costly and labour intensive. Here with its proprietary technology, SWS intends to develop more economical, lower powered and compact sensor devices capable of high-frequency, precision and in situ analysis of water chemistry (e.g. Nitrate (NO3-), Nitrite (NO2-), Phosphate (PO3−4), Ammonium (NH+4)). The devices will provide reliable long-term performance with minimal maintenance.