Soil pH Meter Lutron pH-220S ( Soil Tester Digital ) Spesifikasi: * Complete set with separate soil, spear tip pH electrode and pH 4    and pH 7 standard solution * Meter: 0 to 14 pH x 0.01 pH Electrode: 1 to 13 pH * Auto calibration for pH 4, pH 7  * IP-65 water proof * Build in reverse display button * DC 1.5V battery (UM-4, AA) x 4, long life * Spear tip pH electrode, ideal for penetration pH measurements     into soil, meats, cheese and other type of measurements requiring    sample penetration     Untuk informasi lebih jelas hubungi: Iskandar  Telp : 021-62310892 ; 021-62201063 HP/WA : 0812 8773 7318 Email : glodokteknik@yahoo.com