English

Ion exchange is a process in which ions adsorbed on a surface of the filter media exchanged with other ions that are in the water. This process is made possible through a phenomenon of attraction between the surface of the media charged with polar molecules. When a charged molecule touching a surface that has the opposite charge of the molecule ...

To determine the amount of the total concentration of ammonia nitrogen in water sample used spektrofotomerik principle conducted in labs. In order to be readable by a machine spectrophotometer, ammonia in 10 ml water sample that has been filtered to be treated beforehand with 0.5 ml phenol and 0.5 ml of sodium nitroprusside were homogenized, and then the reaksikan back ...

Soil organisms (microfauna, macrofauna and microflora) have an important role in soil fertility. Soil fertility control activities as indicated by fixing some physical soil properties include (1) the soil structure, (2) the texture and consistency of the ground, (3) retention and movement of water, and (4) the exchange of gases. Chemically there were also changes in soil properties include (1) ...

Refractometer is an instrument used to measure the level / concentration of dissolved materials for instance: Sugar, Salt, Protein etc. The working principle of a refractometer as the name suggests is to utilize the refraction of light. As shown in Figure 28 below a straw dipped in a glass of water will look terbengkok. In the second picture a straw ...

Fish that struggled in the face lethal, decompose faster than the fish that die quietly and quickly, because phase of rigor mortis occurs prematurely. In fish that spend a lot of energy due to hit the net / rod, then the change in glucose asetyl take place quickly so that the reaction occurring anaerobic resulting in the formation of lactic ...

Salting is a method used to preserve the product of fishery by using salt (NaCl). In the process of salting, preservation is done by reducing the water content in the body of fish and in the body of bacteria so that bacteria can not live and grow again. The term salting is also often called marinating. The salting technology is ...