Shopping basket > Review order Currently in your basket Before proceeding to checkout you will need you to either login or create an account. Your items will remain in your basket. USDItem TotalPFAS -- What Every Operator Needs to Know (977 words) $5.50RemoveIntensifying Anaerobic Sludge Fermentation Using The Novel IntensiCarbâ„¢ Technology: Municipal Application and Model Evaluation (15 words) $11.50RemoveNet total: $17.00VAT: $0.00Gross total: $17.00 Payment info When you click the checkout button, you will be redirected to a secure Paypal page where you can either pay using an existing Paypal account, or pay by card without a Paypal account. Continue shopping We access Visa, Mastercard, Maestro, American Express all through Paypal.