There are several companies offering their Ph Meter in market.

I am suggesting you for best Ph Meter with price:

Best Ph Meter with Price:

Magideal Digital PH Meter TDS EC Water Purity PPM Filter Hydroponic Pool Tester Pen
Rs. 640.00
Brand Name Magideal
Colour White
Ean 0665659027428
Item Weight 73 grams
Material Type Plastic
Number of Items 3
Part Number RC_51003144
UPC 665659027428

Waterproof Tds And Temperature Meter
Rs. 1,824.50
Brand Name Phoenix
Ean 0638370185371
Item Weight 259 grams
Special Features Measuring range 0~19990ppm Temp -50℃~70℃ , Resolution 10ppm Temp 0.1℃ , Accuracy ±2℅F•S Temp ±1℃ , Display 4-digital LCD , Environment Humidity:≤95℅ , ATC 0℃~50℃ , Power Supply 4×1.5V(AG13)
UPC 638370185371

Lutron DO-5510 Oxygen Meter with 0.4 mg/L Do Accuracy
Rs. 17,750.00
Brand Name Lutron
Item Weight 349 grams
Manufacturer Series Number DO-5510
Number of Items 1
Part Number DO-5510

mLabs HANNA PH Meter HI 96107 Water Tester Reverse Osmosis
Rs. 1,099.00
Brand Name mlabs
Item Weight 109 grams
Number of Items 1
Part Number mLabs_96107

MCP Genuine TDS Meter Digital HM -TDS 3 with Carry case free
Rs. 625.00