diff -r 3755db604432 -r 3649c3d31d15 www/prod_print.php
--- a/www/prod_print.php	Tue Feb 05 23:09:52 2019 +0100
+++ b/www/prod_print.php	Wed Feb 06 15:14:41 2019 +0100
@@ -576,7 +576,7 @@
 		$this->Checkheader('Filteren en spoelen');
 		$s = sprintf("%.1f",$row['sparge_volume']).' liter spoelwater opwarmen tot '.sprintf("%.1f",$row['sparge_temp']).' '.DEG.'C';
 		$this->Checkline($s);
-		$s = 'spoelwater aanzuren to pH <= '.sprintf("%.1f",$row['sparge_ph']).' met ';
+		$s = 'spoelwater aanzuren tot pH <= '.sprintf("%.1f",$row['sparge_ph']).' met ';
 		$s .= sprintf("%.1f",$row['sparge_acid_amount']*1000).' ml. '.$acidtype[$row['sparge_acid_type']];
 		$this->Checkline($s);