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KYZEN AQUANOX A4651US – Flux Residue Cleaning in Ultrasonic Baths

KYZEN AQUANOX A4651US is a low pH, water-based cleaning agent specifically developed for removing flux residues from printed circuit boards using ultrasonic baths. The product is designed for electronics manufacturing, rework, and service tasks where high demands are placed on cleanliness, process stability, and reliability.

Through the combination of advanced cleaning chemistry and ultrasonic technology, AQUANOX A4651US effectively removes even modern flux formulations, leaving PCBs and solder joints clean and presentable. The product is particularly suitable for companies seeking professional cleaning results without complex process adjustments or extensive bath control.

Developed for Ultrasonic Cleaning of PCBs

AQUANOX A4651US is developed exclusively for ultrasonic-based cleaning processes and delivers consistent cleaning results on both leaded and lead-free soldering processes.

The product is suitable for:

  • Removing flux residues from PCBs
  • Cleaning after reflow soldering
  • Cleaning after wave soldering
  • Cleaning after selective soldering
  • Rework and repair tasks
  • Laboratories and development departments
  • Service and maintenance environments

Effective on All Flux Types

Modern flux systems are becoming increasingly advanced and can be difficult to remove completely. AQUANOX A4651US is designed for effective cleaning of both traditional and newer flux formulations.

The product helps to:

  • Remove visible flux residues
  • Improve visual inspection
  • Prepare PCBs for coating and varnishing
  • Reduce the risk of contamination
  • Ensure consistent cleaning results

The result is clean circuit boards and shiny solder joints, which appear professional during both inspection and final control.

Minimal Bath Control and High Process Stability

One of the major advantages of AQUANOX A4651US is its stable cleaning process. The product is designed to deliver reliable cleaning results with minimal monitoring of the cleaning bath, which reduces the time spent in daily operation.

The low pH value also makes the product easy to handle and contributes to high material compatibility.

Advantages of KYZEN AQUANOX A4651US

  • Developed specifically for ultrasonic baths
  • Effective removal of flux residues from PCBs
  • Works on all common flux types
  • Provides clean and shiny solder joints
  • Minimal monitoring of the cleaning bath
  • Low pH value
  • Water-based formulation
  • Safe on aluminum and copper
  • Compatible with materials used in electronics manufacturing
  • RoHS compliant and halogen-free

Recommended Process Parameters

  • Process: Ultrasonic cleaning
  • Concentration for SnPb processes: ≤ 25 %
  • Concentration for lead-free processes: ≤ 30 %
  • Temperature: Up to 66 °C
  • Rinsing: Hot DI water
  • Drying: Hot air

Specifications

Manufacturer: KYZEN
Product Name: AQUANOX A4651US
Product Type: Cleaning agent for ultrasonic baths
Application: Removal of flux residues from PCBs
Cleaning Method: Ultrasonic cleaning
pH (10 g/L): 9.7
VOC (10 %): 46.7 g/L
Boiling Point: 99 °C
Water Solubility: Complete
Material Compatibility: Aluminum, copper, and other common materials in electronics manufacturing
RoHS Compliant: Yes
Halogen-Free: Yes