Mad Brewer™ Deluxe Brew Lab KitThe Brix Specific Gravity Refractometer allows for quick gravity readings during every step of the process; without the need for a full test jar sample. The Checker 1 pH tester will help you make sure your mash pH is correct. Ensure a healthy fermentation from the yeast and the best flavors from your mash. The Northern Brewer Folding Digital Thermometer provides accurate readings for your brew day, while the Northern Brewer digital pocket scale is