Standard Operating Procedure: Sachet Water Production

This Standard Operating Procedure (SOP) outlines the mandatory guidelines for the production of high-quality, safe, and hygienic sachet water. The objective is to ensure compliance with health and safety regulatory standards, minimize contamination risks, and maintain operational efficiency. All personnel are required to adhere to these procedures strictly to protect public health and maintain brand integrity.

Phase 1: Pre-Production and Sanitization

• Personal Protective Equipment (PPE): Ensure all operators are wearing sanitized lab coats, hairnets, nose masks, and hand gloves.
• Facility Sanitization: Clean the production floor using food-grade disinfectants. Ensure no stagnant water or debris is present.
• Equipment Inspection: Check the integrity of the Ultraviolet (UV) lamps, sediment filters, and carbon filters. Replace if expiry dates have been reached or pressure gauges indicate clogging.
• Sterilization: Run a "flush cycle" of all stainless steel piping and filling nozzles using a certified ozone or chlorine rinse, followed by a fresh water flush.

Phase 2: Water Treatment and Filtration

• Source Water Intake: Initiate the pump from the primary source.
• Sediment Filtration: Ensure the water passes through the sand filter and multi-media filters to remove suspended solids.
• Activated Carbon Treatment: Verify flow rates to ensure optimal removal of chlorine, odors, and organic impurities.
• Micron Filtration: Route water through 5-micron and 1-micron cartridge filters to remove fine particles.
• Reverse Osmosis (RO) / Mineralization: If applicable, verify TDS (Total Dissolved Solids) levels are within the safe potable range (typically 50-150 ppm).
• Disinfection: Ensure the UV sterilizer is ON and the ozone generator is functioning. Monitor the UV intensity indicator.

Phase 3: Filling and Sealing Operations

• Film Loading: Ensure the packaging roll is properly aligned and free of dust.
• Sealing Temperature: Calibrate the heat sealers to the manufacturer’s specified temperature. Perform a "burst test" on the first 5 sachets to ensure the seal is airtight.
• Continuous Monitoring: Check for leakage, uneven sachet volume, or improper date/batch coding every 30 minutes.
• Batch Recording: Log the batch number, date, and operator initials on the production log sheet.

Phase 4: Post-Production and Quality Assurance

• Leaker Detection: Submerge a random sample of sachets in a container to check for pinhole leaks.
• Cold Storage: Transfer finished product to a clean, elevated pallet. Do not store sachets directly on the floor.
• Final Hygiene Check: Sanitize the exterior of the filled sachets before they are bagged for distribution.
• Waste Disposal: Remove all plastic scraps and rejected sachets from the production zone immediately to prevent cross-contamination.

Pro Tips & Pitfalls

• Pro Tip: Maintain a digital log of your filter pressure gauges. A sudden drop in pressure often indicates a burst filter, while a spike indicates clogging.
• Pro Tip: Always keep a spare set of UV lamps on-site. UV effectiveness degrades over time even if the light appears to be on.
• Pitfall: Never bypass the filtration stage during high-demand periods. Bypassing the UV or filtration system to speed up production is a critical safety violation that can lead to waterborne illness outbreaks.
• Pitfall: Avoiding the calibration of heat sealers. A seal that looks tight but is "brittle" will burst during transit, leading to massive product returns and revenue loss.

Frequently Asked Questions (FAQ)

1. How often should I change my micron filters? This depends on the quality of your source water, but as a best practice, sediment filters should be inspected weekly and replaced monthly or whenever the pressure differential exceeds 10 PSI.

2. What is the most common cause of leaking sachets? The most common cause is incorrect sealing temperature or pressure. If the heat is too low, the plastic won't melt enough to bond; if it's too high, it will burn the plastic, creating microscopic pinholes.

3. Why is my water showing a "cloudy" appearance? Cloudiness is usually a sign of trapped air bubbles or a failure in the filtration system (specifically the sediment or carbon filters). Stop production immediately, conduct a water quality test, and inspect the integrity of all filter cartridges.