Investor AB's Patricia Industries has agreed to buy United States-based Advanced Instruments, a provider of scientific and analytical instruments, from Windjammer Capital at an enterprise value of 0 million (606.15 million pounds). Patricia Industries will inject about 0 million in equity while the rest will be financed through external debt and equity investment by key employees at Advanced Instruments, Investor AB said in a statement. Advanced Instruments, a global provider of testing instrumentation and consumables for the clinical, biopharmaceutical and food and beverage markets, had sales of million in the 12 months to June 30.