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ASSALAMU’ALAIKUM

Siti RohmiyatiNurul RohmahHemi EmiliatiGita Nirvanie

GROUP - I -

Asry FebrianaMember’s Name :

DETERMINE OFWATER CONTENT

FORMULA DETERMINE OFWATER CONTENT

PURPOSE OF SOP

Facilitate and accelerate to determine of water content in a sample

SCOPE

For students grade twelve chemical analyst

INTRODUCTION

Determine of water content is amount of water content in an object.

Benefits of water content :1. Avoid spoilage during storage or during shipment.2. Improve the quality and durability.

FORMULA DETERMINE OFWATER CONTENT

%𝐖𝐚𝐭𝐞𝐫 𝐂𝐨𝐧𝐭𝐞𝐧𝐭=𝐖𝐞𝐢𝐠𝐡𝐭𝐅𝐢𝐫𝐬𝐭 𝐒𝐚𝐦𝐩𝐥𝐞−𝐖𝐞𝐢𝐠𝐡𝐭𝐂𝐨𝐧𝐬𝐭𝐚𝐧𝐭𝐒𝐚𝐦𝐩𝐥𝐞𝐖𝐞𝐢𝐠𝐡𝐭𝐅𝐢𝐫𝐬𝐭 𝐒𝐚𝐦𝐩𝐞𝐥 ×𝟏𝟎𝟎%

TOOLS AND MATERIALS

Porcelain Cup Oven The Balance Analytic

Exicator Tissue Corn

PROCEDURS

1. Prepare porcelain cup is dry and clean. Heat in an oven at a temperature of 100°c - 105°c for 15 minutes, pull out and chill in the air for 5 minutes. Then enter in an exicator for 15 minutes and immediately note of weight the porcelain cup.

2. Repeat the first step, until get weight constant the porcelain cup and note of weight constant the porcelain cup.

3. Weight 1-2 grams corn in the balance analytic.

4. Enter in the oven at the temperature 105°c for 3 hours. pull out and chill in the air for 5 minutes. Then enter in an exicator for 15 minutes, immediately weigh.

5. Repeat warm, cool and weight until obtain heavy constant.

6. Count amount of water content in corn.

REFERENCES

Https://id.m.wikipedia.org/wiki/kadar_air?_e_pi_=7%2CPAGE_ID10%2C7574550489Pratiwiningsih. 2015. Penetapan Kadar Air. Cilegon:SMK Negeri 2 Cilegon.Suharwanto. 2014. Gravimetri dan Titrimetri. Cilegon: SMK Negeri 2 Cilegon.

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